Fermented Foods Recipes: Vegetables, Dairy, and More

Sauerkraut is shredded cabbage fermented in its own juice using nothing but salt. It is the simplest and most forgiving vegetable ferment. The salt draws moisture from the cabbage, creating a natural brine that submerges the shreds and supports lacto-fermentation.

1. 1
   Shred and salt Remove the outer leaves and core from a medium cabbage (about 900g-1kg). Shred finely. Sprinkle with 2% salt by weight (about 18-20g for a 1kg cabbage). Massage and squeeze the cabbage with your hands for 5-10 minutes until it releases enough liquid to cover itself.
2. 2
   Pack the jar Press the cabbage tightly into a wide-mouth quart jar, pushing it below the brine with each handful. Leave 3-5cm of headspace. Place a weight on top (a smaller jar filled with water, a zip-lock bag of brine, or a fermentation weight) to keep the cabbage submerged.
3. 3
   Ferment Cover loosely and ferment at 18-22°C (64-72°F) for 7-21 days. Taste after 7 days. Cooler temperatures produce a slower, more complex ferment. Warmer temperatures produce a faster, more sour result. When the flavor and sourness suit your taste, cap tightly and refrigerate.

Kimchi is a Korean fermented vegetable dish, most commonly made with napa cabbage, Korean chili flakes (gochugaru), garlic, ginger, and fish sauce or salted shrimp. The process involves salting the cabbage first, then coating it in a spice paste before packing it into jars to ferment.

1. 1
   Salt the cabbage Quarter a large head of napa cabbage and sprinkle generously with coarse salt (about 60-80g per kg of cabbage). Let it sit for 1-2 hours, turning occasionally, until the leaves are wilted and flexible. Rinse thoroughly 2-3 times to remove excess salt and squeeze out water.
2. 2
   Make the paste Blend or mix together: 3-4 tablespoons gochugaru (Korean chili flakes), 4-5 minced garlic cloves, 1 tablespoon grated fresh ginger, 2 tablespoons fish sauce (or soy sauce for a vegan version), and 1 teaspoon sugar. Add 2-3 chopped scallions and optionally shredded daikon radish and carrot.
3. 3
   Coat and pack Wearing gloves, work the paste between every leaf of the cabbage quarters. Pack tightly into a jar, pressing down to eliminate air pockets. Leave 3-5cm of headspace, as kimchi produces CO2 during fermentation.
4. 4
   Ferment Leave at room temperature for 1-3 days until the kimchi tastes tangy and the brine is bubbly. Then refrigerate. Kimchi continues to develop flavor in the fridge for weeks. Young kimchi (1-3 days) is bright and crunchy. Aged kimchi (2-4 weeks) is more sour and complex.

Lacto-fermented pickles are different from vinegar pickles. They use a salt brine instead of vinegar, and the sour flavor comes from lactic acid produced by Lactobacillus during fermentation. The result is a living, probiotic pickle with a deeper, more complex tang.

Homemade yogurt and kefir are both fermented milk products, but they use different cultures and processes.

A sourdough starter is a fermented mixture of flour and water that captures wild yeast and Lactobacillus from the environment. Once established, it replaces commercial yeast in bread baking and produces the characteristic tangy flavor and chewy texture of sourdough bread.

1. 1
   Day 1 Mix 50g whole wheat or rye flour with 50g water in a jar. Cover loosely and leave at room temperature.
2. 2
   Days 2-6 Each day, discard half the starter and feed with 50g flour and 50g water. By day 3-4, you should see bubbles forming. The starter may smell unpleasant during days 2-3 as various bacteria compete. This is normal. By day 5-6, the smell should shift to pleasantly sour and yeasty.
3. 3
   Day 7 and beyond The starter is ready when it doubles in size within 4-8 hours of feeding and smells like ripe fruit or mild vinegar. It should be bubbly throughout and have a slightly domed top. At this point, you can bake with it or switch to a regular feeding schedule.
4. 4
   Maintenance If you bake daily, keep the starter at room temperature and feed once or twice a day. If you bake weekly, store it in the refrigerator and feed once a week. Pull it out the night before baking and give it 1-2 feedings at room temperature to wake it up.

Miso is a Japanese fermented paste made from soybeans, salt, and koji (rice or barley inoculated with Aspergillus oryzae mold). Homemade miso requires a long fermentation (3-12 months), but the process itself is simple once you have the ingredients.

Tempeh is an Indonesian fermented soybean cake. Cooked soybeans are inoculated with Rhizopus oligosporus mold spores and incubated at 30-32°C (86-90°F) for 24-48 hours. The mold binds the beans into a firm, sliceable cake with a nutty, mushroom-like flavor.

1. 1
   Prepare the beans Soak 500g dried soybeans overnight. Dehull them by kneading in water (the hulls float to the surface). Cook until tender but not mushy, about 45 minutes. Drain thoroughly and spread on a clean towel to cool and dry. The beans must be surface-dry before adding the starter.
2. 2
   Inoculate Once the beans are cooled to below 35°C (95°F), sprinkle with 1 teaspoon of tempeh starter (Rhizopus oligosporus spores, purchased from a fermentation supplier). Mix evenly.
3. 3
   Pack and incubate Pack the inoculated beans into zip-lock bags poked with small holes every 2-3cm (the mold needs airflow). Flatten the bags to about 2-3cm thick. Incubate at 30-32°C (86-90°F) for 24-48 hours. A proofing box, oven with the light on, or insulated cooler with a heating pad works well.
4. 4
   Harvest The tempeh is ready when the beans are bound together by dense white mycelium and the entire block holds together firmly when sliced. Some gray or black spots are normal (those are spores forming). If the tempeh smells strongly of ammonia or shows yellow, green, or orange mold, discard it.

Lacto-fermented hot sauce has a rounder, deeper heat compared to vinegar-based hot sauces. The fermentation mellows the raw pepper flavor and adds a tangy complexity. Fermented salsa follows the same principle, using tomatoes, onions, and peppers in a salt brine.

These two ferments are among the easiest to make and the most versatile in the kitchen. Fermented carrots are a gateway project for anyone new to fermentation. Garlic in brine is a separate preparation from garlic in honey; the latter is not recommended in the Extension guidance reviewed here.

For a seed-based spread or a smooth tomato condiment, use the full fermented mustard and cultured ketchup sections. They include attributed published ingredient lists, procedures, texture and serving advice, and refrigeration limits. These are distinct methods, not substitutions into a pepper mash.