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Date:   Thu, 21 Oct 2021 10:31:51 -0700

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diff --git a/links/rss.xml b/links/rss.xml @@ -4,7 +4,7 @@ <title>Grimgrains</title> <link>https://grimgrains.com/</link> <description>Grimgrains — a plantbased cooking blog</description> -<lastBuildDate>Wed, 20 Oct 2021 00:00:00 +0900</lastBuildDate> +<lastBuildDate>Thu, 21 Oct 2021 00:00:00 +0900</lastBuildDate> <image> <url>https://grimgrains.com/media/services/rss.jpg</url> <title>Grimgrains — a plantbased cooking blog</title> diff --git a/site/lactofermentation.html b/site/lactofermentation.html @@ -2,107 +2,116 @@ <img src="../media/pages/lactofermentation/pickles3.jpg" alt='our pickle collection' loading='lazy'> -<p>Lacto-fermentation is a way to preserve vegetables with just salt and the bacterium (lactobacillus) already present on the vegetables. All vegetables can be fermented.</p> +<p>Lacto-fermentation is a way to preserve any vegetable using salt, and the bacterium (lactobacillus) already present on the vegetables.</p> -<p>Microbial activity occurs which secrete lactic acid, co2 and a variety of enzymes. Lactic acid inhibits the growth of bad bacteria. The mixture eventually achieves a state of balance, and fermentation stops. Conserving vegetables this way can last many years, even when stored at room temperature</p> +<p>When microbial activity occurs, lactic acid is secreted, as well as CO&b2; and a variety of enzymes. Creating an acidic environment makes it near impossible for bad bacteria to establish themselves, even if they are present. Overtime, the mixture eventually achieves a state of balance, and fermentation stops. Conserving vegetables this way can last many years, even when stored at room temperature</p> <p>Preserving food by lacto-fermentation keeps vitamins intact, and in some vegetables, increases its nutritional value. Fermentation also improves the immune system, and digestibility of the food, making them easier for our systems to assimilate.</p> -<h3>General beginner tips</h3> +<h3>General Tips</h3> <ul> - <li><b>Limit air space.</b> A half-filled jar is guaranteed failure.</li> - <li><b>Don't open jars for 3 weeks.</b> Keep air out is essential to a good fermentation.</li> - <li><b>Don't eyeball it.</b> Weigh everything in the beggining, follow recipes exactly to get a feel for how many vegetables can fit in a jar.</li> - <li><b>Use pickling salt.</b> Avoid salt with anti-caking agents or iodine.</li> - <li><b>Ferment in the fall.</b> Ones fermented in the fall will be more successful than in the summer. Winter veg stay more firm than summer veg.</li> + <li><b>Limit air space</b>: A half-filled jar is guaranteed failure.</li> + <li><b>Don't open jars for 3 weeks</b>: Keep air out is essential to a good fermentation.</li> + <li><b>Don't eyeball it</b>: Weigh everything in the beggining, follow recipes exactly to get a feel for how many vegetables can fit in a jar.</li> + <li><b>Use pickling salt</b>: Avoid salt with anti-caking agents or iodine.</li> + <li><b>Ferment in the fall</b>: Ones fermented in the fall will be more successful than in the summer. Winter veg stay more firm than summer veg.</li> </ul> <h3>Table of Contents</h3> <ul class="col2"> - <li><a href="#allveg">Can you ferment all vegetables?</a></li> - <li><a href="#botulism">Botulism</a></li> - <li><a href="#nofridge">No fridge</a></li> - <li><a href="#sterilize">Sterilization of jars</a></li> + <li><a href="#methods">Fermenting methods</a></li> <li><a href="#salt">Salt</a></li> <li><a href="#water">Water</a></li> <li><a href="#brine">Brine</a></li> - <li><a href="#methods">Methods</a></li> + <li><a href="#sterilize">Sterilization</a></li> + <li><a href="#botulism">Botulism</a></li> + <li><a href="#nofridge">No fridge</a></li> + <li><a href="#shelflife">Shelf life</a></li> + <li><a href="#sunlight">Sunlight</a></li> <li><a href="#jars">What kind of jar to use</a></li> <li><a href="#openedjar">What to do when a jar is opened</a></li> - <li><a href="#recipes">Recipes</a></li> + <li><a href="#allveg">Can you ferment all vegetables?</a></li> + <li><a href="#spices">Spices</a></li> <li><a href="#summerveg">Summer vegetables</a></li> + <li><a href="#bestveg">Recommended vegetables</a></li> <li><a href="#vegetables">Notes on specific vegetables</a></li> + <li><a href="#recipes">Recipes</a></li> <li><a href="#resources">Resources</a></li> </ul> -<h3 id='allveg'>Can you ferment all vegetables?</h3> +<h3 id='methods'>Fermenting methods</h3> -<p>The short answer is, yes, but also, will it be delicious? All vegetables behave differently to fermentation, some will get mushy, or gooey, or develop flavors that you may not enjoy.</p> -<p>For instance, beets with salt become gooey with a thick syrup. We like it, but not everyone does. Some people may prefer beets in brine instead.</p> +<p><b>Dry-salt method</b>. The dry-salting method requires that vegetables be chopped or shredded, for only with lots of surface area exposed can the salt pull water out of the vegetables. It's necessary to massage the vegetables and salt mix with your hands to help draw out the water. Compressing them in the jar will further remove more water, and eliminate air pockets between vegetables. This method is ideal for vegetables that contain lots of water. The water in the veg will usually be enough to cover them entirely, if this isn't the case, it's necessary to add more brine. Root vegetables sliced thinly usually leech out enough water by themselves.</p> -<p>Mushrooms tend to turn to mush when lacto-fermented, all behave differently. We think it is better to dry mushrooms instead. Plus, some mushrooms 'problem compounds' that might cause gastro-intestinal issues.</p> +<p><b>Brine method</b>. The brine method requires that the chopped vegetables be submerged in brine. The brine consists of pickling salt dissolved in water. This method is ideal for vegetables with less water content (ex: cauliflower, brussel sprouts, small white onions etc) or those cut in large chunks (ex: large carrot chunks instead of julienned carrots). The brine ought to be cold, not warm (only exception is with cucumbers). Veg in brine may soften more than those process using the dry-salt method.</p> -<p>Leafy veg won't fair very well, they'll disintegrate.</p> +<p>In both cases, the brine prevents exposure to oxygen, creating the perfect environment for lacto-fermentation.</p> -<h3 id='botulism'>Botulism?</h3> +<p>To start a fermentation, the vegetables and salt are put in jars and left to ferment on the counter for <b>7 days</b>. Then, moved to a cool place to continue to ferment for <b>2 more weeks</b>. After this time it's possible to eat it, or to keep it for long-term storage.</p> -<p>Lacto-fermentation is very safe because acidity is the enemy of botulism. The PH of the mixture is so low (below 5), so acidic, that no pathogens can survive. If you measured enough salt for the quantity of vegetables you've got, and that you've followed all directions to the letter (no air, non-iodized salt and non-chlorinated water) everything will be fine and the resulting product will be perfectly safe to eat.</p> +<h3 id='salt'>Salt</h3> -<p>If ever a fermentation goes wrong, you'll smell it, and it'll be easy to spot. This makes accidentally eating a bad lacto-fermented product very difficult.</p> +<p>When pickling vegetables, use <b>pickling salt</b>. Pickling salt is sodium chloride without added iodine or anti-caking agents. Iodine kills the lactobacillus present on all fresh vegetables, a bacterium that is an essential part of the lactic-acid fermentation process.</p> -<h3 id='nofridge'>No fridge</h3> +<p>We recommended <b>10 g of salt per kg of vegetables</b>, or 1% per weight. If you don't have a scale (although I reccommend you get one, thrift stores are FULL of them), 1 tsp equals about 5g of salt.</p> -<p>The jars are shelf-stable, you don't need to put them in the refrigerator. For long-term preservation, find a cool place away from light and heat. This is usually enough.</p> +<p>Salt essentially slows fermentation and enzyme activity and thereby prolongs the preservation potential. Temperature also impacts upon the speed of fermentation (fermentation occurs faster in summer than winter). If we preserve vegetables with the goal of eating them much later, we add more salt, if the goal is to eat it as soon as it's ready, we use less.</p> -<p>Once you open a jar, it's possible to store in the fridge but if you're careful with how you handle the food and the jar it'll be fine outside too, see <a href="#openedjar">What to do when a jar is opened</a> for more information.</p> +<h3 id='water'>Water</h3> -<h3 id='sterilize'>Sterilization of jars</h3> +<p>Non-chlorinated water is ideal, because chlorine is antiseptic. Filter the water, or let it rest on the counter for a few hours to permit the chlorine to evaporate.</p> -<p>Clean your jars with warm soapy water, no need to sterilize them beforehand.</p> +<h3 id='brine'>Brine</h3> -<h3 id='salt'>Salt</h3> +<p>When fermenting vegetables in brine, a ratio of <b>30 g per liter of water</b>, or 3% per vegetable weight, is necessary for vegetables. Allow the salt to fully dissolve in the brine before using.</p> -<p>When pickling vegetables, use <b>pickling salt</b>. Pickling salt is sodium chloride without added iodine or anti-caking agents. Iodine kills the lactobacillus present on all fresh vegetables, a bacterium that is an essential part of the lactic-acid fermentation process.</p> +<h3 id='sterilize'>Sterilization</h3> -<p>We recommended <b>10 g of salt per kg of vegetables</b>.</p> +<p>Clean your jars, hands and tools with warm soapy water, no need to sterilize them beforehand.</p> -<p>Salt essentially slows fermentation and enzyme activity and thereby prolongs preservation potential. Temperature also impacts upon the speed of fermentation (fermentation occurs faster in summer than winter). If we preserve vegetables with the goal of eating them much later, we add more salt, if the goal is to eat it as soon as it's ready, we use less.</p> +<h3 id='allveg'>Can you ferment any vegetable?</h3> -<h3 id='water'>Water</h3> +<p>The short answer is, yes, but not all might be palatable or keep shape. Each vegetable reponds differently to fermentation. For instance, mushrooms tend to soften when lacto-fermented, and leafy greens will disintegrate.</p> + +<h3 id='botulism'>Botulism?</h3> -<p>Non-chlorinated water is ideal, because chlorine is antiseptic. Filter the water, or let it rest on the counter for a few hours to permit the chlorine to dissipate.</p> +<p>Lacto-fermentation is generally safe because acidity is the enemy of botulism. The PH of the brine is low, therefore acidic, and so no pathogens can survive. If you have properly measured the salt, in relation to the quantity of vegetables, and followed directions to the letter (no air, non-iodized salt and non-chlorinated water) everything will be fine and the resulting product will be safe to eat.</p> -<h3 id='brine'>Brine</h3> +<p>If a fermentation goes wrong, you'll be able to smell it. This makes accidentally eating a bad lacto-fermented product very unlikely.</p> -<p>When fermenting vegetables in brine, a ratio of <b>30 g per liter of water</b> is necessary for vegetables. Allow the salt to fully dissolve in the brine before using.</p> +<h3 id='nofridge'>No fridge</h3> + +<p>The jars are shelf-stable, you don't need to put them in the refrigerator. For long-term preservation, find a cool place away from light and heat. Once you open a jar, you may store it in the refrigerator, but if you're careful not to use dirty utensils to retrieve the content of the jar, it shouldn't be necessary, see <a href="#openedjar">What to do when a jar is opened</a> for more information.</p> -<h3 id='methods'>Methods</h3> +<h3 id='shelflife'>Shelf life of lacto-fermented foods</h3> -<p><b>Dry-salt method</b>. The dry-salting method requires that vegetables be chopped or shredded, for only with lots of surface area exposed can the salt pull water out of the vegetables.</p> +<p>Unlike canned foods, most vegetables preserved by fermentation will not last forever. How long they last depends on the pH, salinity, how they're stored, overall humidity of the environment etc.</p> -<p><b>Brine method</b>. The brine method requires that the chopped vegetables be submerged in brine. The brine consists of pickling salt dissolved in water.</p> +<p>Lacto-fermented foods are alive. Eventually they'll yield to other organisms and acidify, or soften to a point that will render it uneatable. Fermenting foods this way prolongs their shelf life, but it is in no way infinite.</p> -<p>In both cases, the vegetables and salt are put in jars and left to ferment on the counter for <b>7 days</b>. Then, moved to a cool place to continue to ferment for <b>2 more weeks</b>. After this time it's possible to eat it, or to keep it for long-term storage.</p> +<h3 id='sunlight'>Sunlight</h3> + +<p>As a general rule, it is best to keep jars of fermenting foods away from direct sunlight. Away from sunlight doesn't mean they need to be kept in total darkness.</p> <img src="../media/pages/lactofermentation/lacto2.jpg" alt='cauliflower and red onion in spring top jar' loading='lazy'> <h3 id='jars'>What kind of jar to use</h3> -<p>Which ever vessel you choose, it's important to remember that you have to allow for the jars to 'burp' out co2.</p> +<p>Which ever vessel you choose, it's important to remember that you have to allow for the jars to 'burp' out CO&b2;.</p> <p><b>Spring-top jars.</b> (See above image) Our favorite jar type is the spring-top variety with the rubber seal and metal fastenings. If under pressure, the jar will 'burp' itself without letting air inside. It is a simple, no-fuss option.</p> <p><b>Jars with an air-lock</b>. A regular jar topped with a lid and air-lock is a good option. The air-lock permits the air inside to escape while prevent outside air to enter.</p> -<p><b>Open jars</b>. If you plan to process a lot of vegetables, using a larger, open container makes sense, but it's important to keep all vegetables well-submerged in the brine and to cover the container with a bag to keep air from coming in. We like to use a plate that fits the diameter of the container, and to fit it over the vegetables topside down. Then, we fill a jar with water and set it over top. The brine will cover the plate and the weight partially. The important thing is that all vegetables stay in the brine during the fermentation period. This method isn't suitable for long-term preservation, it's necessary to transfer its contents to smaller jars after the 2 week fermentation period. This method is also useful if you plan to eat the vegetables right away, after the first week.</p> +<p><b>Crock</b>. If you plan to process a lot of vegetables, using a larger, open container makes sense, but it's important to keep all vegetables well-submerged in the brine and to cover the container with a bag to keep air from coming in. "Cover the chopped salted vegetables with a plate that fits inside the crock and sits on the surface of the vegetables, then weigh the plate down, usually with a gallon-size jug full of water, to keep the vegetables submerged under their juices and thereby protect them from oxygen. Finally, I cover the whole setup with a cloth to keep flies out. Often, I tie a string around the cloth to secure it." (Sandor Katz) The important thing is that all vegetables stay in the brine during the fermentation period. This method isn't suitable for long-term preservation, it's necessary to transfer its contents to smaller jars after the 2 week fermentation period. This method is also useful if you plan to eat the vegetables right away, after the first week.</p> <p><b>Canning jars</b>. Using canning jars is fine, but the metal lids may corrode because of the acidity of the fermenation. Also, it's necessary to burp the jars by hand, otherwise they may explode from the pressure. The top of the jar will give you clear signs that it needs to be burped, it'll bulge outward.</p> <h3 id='openedjar'>What to do when a jar is opened</h3> -<p>Once we open a jar we go through them fast, usually within a week, but they can last for months. It is necessary to take a few precautions:</p> +<p>Once we open a jar we usually go through them within a week, but they could last for months. It is necessary to take a few precautions:</p> <ul> <li><b>Use clean tools.</b> Don't use a fork that's been in your mouth, and don't handle veg in the jar with your fingers</li> @@ -111,13 +120,34 @@ <li><b>Store in a cool area.</b> When opened, store in an area under 15°C.</li> </ul> +<h3 id='spices'>Spices</h3> + +<p>Vegetables can be fermented alone, or with spices. Kimchi is typically spiced with chilies(dry or fresh), ginger, garlic, and onions, scallions, shallots, or leeks. Sauerkraut is often processed with juniper berries, caraway, dill, and celery seeds. Most of these traditional spices act as mold inhibitors, although this doesn't mean that they can prevent mold entirely, but it can help slow their growth.</p> + +<p>Many spices have medicinal or antiviral properties that make them attractive additions to ferments, like turmeric. Whole cumin, coriander, fenugreek and mustard seeds add wonderful depth to a variety of vegetables. Experiment, see what you like best.</p> + +<p>Fresh herbs are best for short-term fermentations.</p> + <h3 id='summerveg'>Summer vegetables</h3> <p>There is a reason that people preserve food in the fall. Summer climate is less ideal to start fermentation, but also the microbiological flora of the soil during that time is less favorable.</p> +<h3 id='bestveg'>Recommended vegetables</h3> + +<p>Below are the vegetables we have the most experience with and that we recommend. The best vegetable to start with when learning how to make lacto-fermentations is cabbage.</p> + +<p><b>Cabbage</b>. Make sauerkraut, or kimchi. This is a great vegetable to start with. It's cheap, and tastes amazing. Use red and green cabbage, both are good. Good for long-term storage.</p> +<p><b>Radish</b>. Delicious when mixed into kimchi, or mixed with red onions in brine. Good for long-term storage.</p> +<p><b>Carrots</b>. Whether fermented in brine or with salt, carrots are delicious. We prefer ours cut thin and processed with just salt, because they stay firm and have more flavor than in brine. They're also cheap, and plentiful. We like to add carrots to our kimchi, or to ferment it with garlic, ground mustard seeds and turmeric.</p> +<p><b>Yellow or red Onions</b>. Onions are tasty when fermented alone, or alongside other vegetables like cauliflower in brine. The red from red onions will leech into the brine and color the other vegetables, it looks great and tastes great too. Red onions are less 'aggressive' than yellow onions.</p> +<p><b>Cauliflower</b>. When mixed with red onions in brine cauliflower develop a deep and amazing citrusy flavor. The taste gets better after a month. They stay nice and crispy even after many weeks.</p> +<p><b>Eggplants</b>. Eggplants mixed with spices like oregano, garlic, chili flakes and basil in brine taste fantastic! These are one of our favorites. (See notes in section below on preparing eggplant).</p> + +<p>Other great veg to ferment include turnips, beets, parsnips, rutabaga, celery root, parsley root, and burdock.</p> + <h3 id='vegetables'>Notes on specific vegetables</h3> -<p><b>Beets</b>. Beets have a very violent fermentation, due to the presence of sugar. The jar will ooze and spit, so be sure to place a plate under it.</p> +<p><b>Beets</b>. Beets are delicious, but have a very violent fermentation, due to the presence of sugar. The jar will ooze and spit, so be sure to place a plate under it. Beets with salt will develop a thick syrup that not everyone may enjoy, in that case it may be better to use brine.</p> <p><b>Eggplants</b>. Remove the skin. The skin doesn't soften much, and it is difficult to chew. It's also necessary to let massage the salt into the cut eggplants before hand to draw out the water, doing this will make them less bitter and they'll absorb the brine better. Eggplants don't keep as long as other veg, they'll get too acidic after 6 months.</p> <p><b>Tomatoes</b>. Like eggplants, tomatoes become more acidic with time and shouldn't be left to ferment too long.</p> <p><b>Garlic</b>. Best to use up early summer garlic for best flavor.</p> @@ -150,4 +180,5 @@ </ul> <p>See a mistake? <a href="https://github.com/hundredrabbits/Grimgrains" class="external" target="_blank">Make a pull request</a> on Github. Or contact us on <a href="https://twitter.com/hundredrabbits" class="external" target="_blank">twitter</a> or <a href="https://merveilles.town/@rek" class="external" target="_blank">mastodon</a>.</p> -<p>Jump back to <a href="#overview">top</a>.</p></main><footer><a href='about.html'>Grimgrains</a> © 2014—2021 <a href='https://creativecommons.org/licenses/by-nc-sa/4.0/' target='_blank'> BY-NC-SA-4.0</a><br><a href='http://100r.co/' target='_blank'>Hundred Rabbits</a></footer></body></html> -\ No newline at end of file +<p>Jump back to <a href="#overview">top</a>.</p> +</main><footer><a href='about.html'>Grimgrains</a> © 2014—2021 <a href='https://creativecommons.org/licenses/by-nc-sa/4.0/' target='_blank'> BY-NC-SA-4.0</a><br><a href='http://100r.co/' target='_blank'>Hundred Rabbits</a></footer></body></html> +\ No newline at end of file diff --git a/src/inc/lactofermentation.htm b/src/inc/lactofermentation.htm @@ -2,9 +2,9 @@ <img src="../media/pages/lactofermentation/pickles3.jpg" alt='our pickle collection' loading='lazy'> -<p>Lacto-fermentation is a way to preserve any vegetable using salt, and the bacterium (lactobacillus) already present on the vegetables. </p> +<p>Lacto-fermentation is a way to preserve any vegetable using salt, and the bacterium (lactobacillus) already present on the vegetables.</p> -<p>When microbial activity occurs, lactic acid is secreted, as well as CO&b2; and a variety of enzymes. Lactic acid inhibits the growth of bad bacteria. The mixture eventually achieves a state of balance, and fermentation stops. Conserving vegetables this way can last many years, even when stored at room temperature</p> +<p>When microbial activity occurs, lactic acid is secreted, as well as CO&b2; and a variety of enzymes. Creating an acidic environment makes it near impossible for bad bacteria to establish themselves, even if they are present. Overtime, the mixture eventually achieves a state of balance, and fermentation stops. Conserving vegetables this way can last many years, even when stored at room temperature</p> <p>Preserving food by lacto-fermentation keeps vitamins intact, and in some vegetables, increases its nutritional value. Fermentation also improves the immune system, and digestibility of the food, making them easier for our systems to assimilate.</p> @@ -20,45 +20,42 @@ <h3>Table of Contents</h3> <ul class="col2"> - <li><a href="#allveg">Can you ferment all vegetables?</a></li> - <li><a href="#botulism">Botulism</a></li> - <li><a href="#nofridge">No fridge</a></li> - <li><a href="#sterilize">Sterilization of jars</a></li> + <li><a href="#methods">Fermenting methods</a></li> <li><a href="#salt">Salt</a></li> <li><a href="#water">Water</a></li> <li><a href="#brine">Brine</a></li> - <li><a href="#methods">Methods</a></li> + <li><a href="#sterilize">Sterilization</a></li> + <li><a href="#botulism">Botulism</a></li> + <li><a href="#nofridge">No fridge</a></li> + <li><a href="#shelflife">Shelf life</a></li> + <li><a href="#sunlight">Sunlight</a></li> <li><a href="#jars">What kind of jar to use</a></li> <li><a href="#openedjar">What to do when a jar is opened</a></li> - <li><a href="#recipes">Recipes</a></li> + <li><a href="#allveg">Can you ferment all vegetables?</a></li> + <li><a href="#spices">Spices</a></li> <li><a href="#summerveg">Summer vegetables</a></li> + <li><a href="#bestveg">Recommended vegetables</a></li> <li><a href="#vegetables">Notes on specific vegetables</a></li> + <li><a href="#recipes">Recipes</a></li> <li><a href="#resources">Resources</a></li> </ul> -<h3 id='allveg'>Can you ferment any vegetable?</h3> - -<p>The short answer is, yes, but not all might be palatable or keep shape. Each vegetable reponds differently to fermentation. For instance, mushrooms tend to soften when lacto-fermented, and leafy greens will disintegrate.</p> - -<h3 id='botulism'>Botulism?</h3> +<h3 id='methods'>Fermenting methods</h3> -<p>Lacto-fermentation is generally safe because acidity is the enemy of botulism. The PH of the brine is low, therefore acidic, and so no pathogens can survive. If you have properly measured the salt, in relation to the quantity of vegetables, and followed directions to the letter (no air, non-iodized salt and non-chlorinated water) everything will be fine and the resulting product will be safe to eat.</p> -<p>If a fermentation goes wrong, you'll be able to smell it. This makes accidentally eating a bad lacto-fermented product very unlikely.</p> +<p><b>Dry-salt method</b>. The dry-salting method requires that vegetables be chopped or shredded, for only with lots of surface area exposed can the salt pull water out of the vegetables. It's necessary to massage the vegetables and salt mix with your hands to help draw out the water. Compressing them in the jar will further remove more water, and eliminate air pockets between vegetables. This method is ideal for vegetables that contain lots of water. The water in the veg will usually be enough to cover them entirely, if this isn't the case, it's necessary to add more brine. Root vegetables sliced thinly usually leech out enough water by themselves.</p> -<h3 id='nofridge'>No fridge</h3> +<p><b>Brine method</b>. The brine method requires that the chopped vegetables be submerged in brine. The brine consists of pickling salt dissolved in water. This method is ideal for vegetables with less water content (ex: cauliflower, brussel sprouts, small white onions etc) or those cut in large chunks (ex: large carrot chunks instead of julienned carrots). The brine ought to be cold, not warm (only exception is with cucumbers). Veg in brine may soften more than those process using the dry-salt method.</p> -<p>The jars are shelf-stable, you don't need to put them in the refrigerator. For long-term preservation, find a cool place away from light and heat. Once you open a jar, you may store it in the refrigerator, but if you're careful not to use dirty utensils to retrieve the content of the jar, it shouldn't be necessary, see <a href="#openedjar">What to do when a jar is opened</a> for more information.</p> +<p>In both cases, the brine prevents exposure to oxygen, creating the perfect environment for lacto-fermentation.</p> -<h3 id='sterilize'>Sterilization of jars</h3> - -<p>Clean your jars with warm soapy water, no need to sterilize them beforehand.</p> +<p>To start a fermentation, the vegetables and salt are put in jars and left to ferment on the counter for <b>7 days</b>. Then, moved to a cool place to continue to ferment for <b>2 more weeks</b>. After this time it's possible to eat it, or to keep it for long-term storage.</p> <h3 id='salt'>Salt</h3> <p>When pickling vegetables, use <b>pickling salt</b>. Pickling salt is sodium chloride without added iodine or anti-caking agents. Iodine kills the lactobacillus present on all fresh vegetables, a bacterium that is an essential part of the lactic-acid fermentation process.</p> -<p>We recommended <b>10 g of salt per kg of vegetables</b>.</p> +<p>We recommended <b>10 g of salt per kg of vegetables</b>, or 1% per weight. If you don't have a scale (although I reccommend you get one, thrift stores are FULL of them), 1 tsp equals about 5g of salt.</p> <p>Salt essentially slows fermentation and enzyme activity and thereby prolongs the preservation potential. Temperature also impacts upon the speed of fermentation (fermentation occurs faster in summer than winter). If we preserve vegetables with the goal of eating them much later, we add more salt, if the goal is to eat it as soon as it's ready, we use less.</p> @@ -68,15 +65,35 @@ <h3 id='brine'>Brine</h3> -<p>When fermenting vegetables in brine, a ratio of <b>30 g per liter of water</b> is necessary for vegetables. Allow the salt to fully dissolve in the brine before using.</p> +<p>When fermenting vegetables in brine, a ratio of <b>30 g per liter of water</b>, or 3% per vegetable weight, is necessary for vegetables. Allow the salt to fully dissolve in the brine before using.</p> -<h3 id='methods'>Methods</h3> +<h3 id='sterilize'>Sterilization</h3> -<p><b>Dry-salt method</b>. The dry-salting method requires that vegetables be chopped or shredded, for only with lots of surface area exposed can the salt pull water out of the vegetables.</p> +<p>Clean your jars, hands and tools with warm soapy water, no need to sterilize them beforehand.</p> -<p><b>Brine method</b>. The brine method requires that the chopped vegetables be submerged in brine. The brine consists of pickling salt dissolved in water.</p> +<h3 id='allveg'>Can you ferment any vegetable?</h3> -<p>In both cases, the vegetables and salt are put in jars and left to ferment on the counter for <b>7 days</b>. Then, moved to a cool place to continue to ferment for <b>2 more weeks</b>. After this time it's possible to eat it, or to keep it for long-term storage.</p> +<p>The short answer is, yes, but not all might be palatable or keep shape. Each vegetable reponds differently to fermentation. For instance, mushrooms tend to soften when lacto-fermented, and leafy greens will disintegrate.</p> + +<h3 id='botulism'>Botulism?</h3> + +<p>Lacto-fermentation is generally safe because acidity is the enemy of botulism. The PH of the brine is low, therefore acidic, and so no pathogens can survive. If you have properly measured the salt, in relation to the quantity of vegetables, and followed directions to the letter (no air, non-iodized salt and non-chlorinated water) everything will be fine and the resulting product will be safe to eat.</p> + +<p>If a fermentation goes wrong, you'll be able to smell it. This makes accidentally eating a bad lacto-fermented product very unlikely.</p> + +<h3 id='nofridge'>No fridge</h3> + +<p>The jars are shelf-stable, you don't need to put them in the refrigerator. For long-term preservation, find a cool place away from light and heat. Once you open a jar, you may store it in the refrigerator, but if you're careful not to use dirty utensils to retrieve the content of the jar, it shouldn't be necessary, see <a href="#openedjar">What to do when a jar is opened</a> for more information.</p> + +<h3 id='shelflife'>Shelf life of lacto-fermented foods</h3> + +<p>Unlike canned foods, most vegetables preserved by fermentation will not last forever. How long they last depends on the pH, salinity, how they're stored, overall humidity of the environment etc.</p> + +<p>Lacto-fermented foods are alive. Eventually they'll yield to other organisms and acidify, or soften to a point that will render it uneatable. Fermenting foods this way prolongs their shelf life, but it is in no way infinite.</p> + +<h3 id='sunlight'>Sunlight</h3> + +<p>As a general rule, it is best to keep jars of fermenting foods away from direct sunlight. Away from sunlight doesn't mean they need to be kept in total darkness.</p> <img src="../media/pages/lactofermentation/lacto2.jpg" alt='cauliflower and red onion in spring top jar' loading='lazy'> @@ -88,7 +105,7 @@ <p><b>Jars with an air-lock</b>. A regular jar topped with a lid and air-lock is a good option. The air-lock permits the air inside to escape while prevent outside air to enter.</p> -<p><b>Open jars</b>. If you plan to process a lot of vegetables, using a larger, open container makes sense, but it's important to keep all vegetables well-submerged in the brine and to cover the container with a bag to keep air from coming in. We like to use a plate that fits the diameter of the container, and to fit it over the vegetables topside down. Then, we fill a jar with water and set it over top. The brine will cover the plate and the weight partially. The important thing is that all vegetables stay in the brine during the fermentation period. This method isn't suitable for long-term preservation, it's necessary to transfer its contents to smaller jars after the 2 week fermentation period. This method is also useful if you plan to eat the vegetables right away, after the first week.</p> +<p><b>Crock</b>. If you plan to process a lot of vegetables, using a larger, open container makes sense, but it's important to keep all vegetables well-submerged in the brine and to cover the container with a bag to keep air from coming in. "Cover the chopped salted vegetables with a plate that fits inside the crock and sits on the surface of the vegetables, then weigh the plate down, usually with a gallon-size jug full of water, to keep the vegetables submerged under their juices and thereby protect them from oxygen. Finally, I cover the whole setup with a cloth to keep flies out. Often, I tie a string around the cloth to secure it." (Sandor Katz) The important thing is that all vegetables stay in the brine during the fermentation period. This method isn't suitable for long-term preservation, it's necessary to transfer its contents to smaller jars after the 2 week fermentation period. This method is also useful if you plan to eat the vegetables right away, after the first week.</p> <p><b>Canning jars</b>. Using canning jars is fine, but the metal lids may corrode because of the acidity of the fermenation. Also, it's necessary to burp the jars by hand, otherwise they may explode from the pressure. The top of the jar will give you clear signs that it needs to be burped, it'll bulge outward.</p> @@ -103,13 +120,34 @@ <li><b>Store in a cool area.</b> When opened, store in an area under 15°C.</li> </ul> +<h3 id='spices'>Spices</h3> + +<p>Vegetables can be fermented alone, or with spices. Kimchi is typically spiced with chilies(dry or fresh), ginger, garlic, and onions, scallions, shallots, or leeks. Sauerkraut is often processed with juniper berries, caraway, dill, and celery seeds. Most of these traditional spices act as mold inhibitors, although this doesn't mean that they can prevent mold entirely, but it can help slow their growth.</p> + +<p>Many spices have medicinal or antiviral properties that make them attractive additions to ferments, like turmeric. Whole cumin, coriander, fenugreek and mustard seeds add wonderful depth to a variety of vegetables. Experiment, see what you like best.</p> + +<p>Fresh herbs are best for short-term fermentations.</p> + <h3 id='summerveg'>Summer vegetables</h3> <p>There is a reason that people preserve food in the fall. Summer climate is less ideal to start fermentation, but also the microbiological flora of the soil during that time is less favorable.</p> +<h3 id='bestveg'>Recommended vegetables</h3> + +<p>Below are the vegetables we have the most experience with and that we recommend. The best vegetable to start with when learning how to make lacto-fermentations is cabbage.</p> + +<p><b>Cabbage</b>. Make sauerkraut, or kimchi. This is a great vegetable to start with. It's cheap, and tastes amazing. Use red and green cabbage, both are good. Good for long-term storage.</p> +<p><b>Radish</b>. Delicious when mixed into kimchi, or mixed with red onions in brine. Good for long-term storage.</p> +<p><b>Carrots</b>. Whether fermented in brine or with salt, carrots are delicious. We prefer ours cut thin and processed with just salt, because they stay firm and have more flavor than in brine. They're also cheap, and plentiful. We like to add carrots to our kimchi, or to ferment it with garlic, ground mustard seeds and turmeric.</p> +<p><b>Yellow or red Onions</b>. Onions are tasty when fermented alone, or alongside other vegetables like cauliflower in brine. The red from red onions will leech into the brine and color the other vegetables, it looks great and tastes great too. Red onions are less 'aggressive' than yellow onions.</p> +<p><b>Cauliflower</b>. When mixed with red onions in brine cauliflower develop a deep and amazing citrusy flavor. The taste gets better after a month. They stay nice and crispy even after many weeks.</p> +<p><b>Eggplants</b>. Eggplants mixed with spices like oregano, garlic, chili flakes and basil in brine taste fantastic! These are one of our favorites. (See notes in section below on preparing eggplant).</p> + +<p>Other great veg to ferment include turnips, beets, parsnips, rutabaga, celery root, parsley root, and burdock.</p> + <h3 id='vegetables'>Notes on specific vegetables</h3> -<p><b>Beets</b>. Beets have a very violent fermentation, due to the presence of sugar. The jar will ooze and spit, so be sure to place a plate under it.</p> +<p><b>Beets</b>. Beets are delicious, but have a very violent fermentation, due to the presence of sugar. The jar will ooze and spit, so be sure to place a plate under it. Beets with salt will develop a thick syrup that not everyone may enjoy, in that case it may be better to use brine.</p> <p><b>Eggplants</b>. Remove the skin. The skin doesn't soften much, and it is difficult to chew. It's also necessary to let massage the salt into the cut eggplants before hand to draw out the water, doing this will make them less bitter and they'll absorb the brine better. Eggplants don't keep as long as other veg, they'll get too acidic after 6 months.</p> <p><b>Tomatoes</b>. Like eggplants, tomatoes become more acidic with time and shouldn't be left to ferment too long.</p> <p><b>Garlic</b>. Best to use up early summer garlic for best flavor.</p>