Legumes & Soy Fermentation
Legume fermentation unlocks nutrition and creates protein-rich foods like tempeh, miso, and natto.
Overview
Fermented legumes are nutritional powerhouses found in cuisines worldwide. Fermentation breaks down antinutrients like phytic acid, making minerals more bioavailable, while also creating beneficial compounds and improving digestibility of plant proteins.
History
Soy fermentation in East Asia dates back over 2,500 years, giving rise to miso, tempeh, natto, and soy sauce. In Africa, locust bean fermentation produces dawadawa. Indian cultures developed fermented dals and dosas from legume batters.
Key Benefits
- Increased protein digestibility
- Reduced antinutrients
- Vitamin K2 production (especially in natto)
- Complete amino acid profiles
Tips
Proper cooking of legumes before fermentation is essential. Temperature control is crucial - tempeh needs warmth (85-90°F), while miso ferments slowly over months.
Equipment
- Incubator or proofing box for tempeh (maintains 85-90°F)
- Banana leaves or perforated bags for tempeh wrapping
- Ceramic crocks for long-term miso fermentation
- Heavy weights for pressing miso
- Pressure cooker for efficient legume cooking
- Koji spores or tempeh starter culture
Recommended for Beginners
- Tempeh – Visible progress and ready in 24-48 hours
- Fermented hummus – Simple addition of whey to hummus
- Dosa batter – Traditional Indian fermented lentil batter
- Sweet white miso – Shorter fermentation than darker varieties
Safety Considerations
- Always fully cook legumes before fermenting
- Maintain proper temperature for tempeh to prevent harmful bacteria
- Use only food-grade mold spores from reputable sources
- Long-fermented miso should be stored properly to prevent contamination
Legumes & Soy Ferments (27)
- Tempeh — Fermented soybeans
- Natto — Sticky fermented soybeans
- Shoyu — Savory soy sauce
- Tamari — Rich soy sauce
- Doubanjiang — Chili bean paste
- Gochujang — Sweet chili paste
- Tauco — Salted bean paste
- Meju blocks — Fermented soybean
- Douchi (black beans) — Salty black beans
- Furu (tofu cubes) — Creamy tofu cubes
- Tempeh gembus — Okara tempeh
- Stinky tofu — Pungent tofu
- Stinky tofu brine — Pungent brine
- Soybean oil cake — Alkaline soy cake
- Doenjang — Deep savory paste
- Fermented Lupin Beans — Bitter-sour beans
- Fermented Chickpeas — Tangy legumes
- Fermented Lentils — Sour lentils
- Fermented Mung Beans — Light tang
- Fermented Black Lentils — Earthy sour
- Soy yogurt — Plant yogurt
- Soy cream — Tangy soy
- Pea miso — Pea umami
- Fermented Fava Beans — Hearty sour
- Fermented Adzuki Beans — Sweet-sour bean
- Black soybeans — Rich umami
- Soy curd skin — Tangy tofu skin