How to Make Fermented Fava Beans
Lacto-fermented fava beans transform this ancient legume into a tangy, probiotic-rich preparation. Fermentation enhances their nutty flavor and improves digestibility.
Category: Legumes & Soy · Method: Lactic Acid · Time: 7-21d · Difficulty: 2/5 · Yield: varies · Temp: 18-22°C
History
Fava beans have been cultivated in the Mediterranean for 8,000 years. Fermented preparations appear in Egyptian records and remain common in Middle Eastern cuisines.
Ingredients
- 2 cups Dried fava beans — Soaked 24 hours and skins removed for best texture
- 20-25g (approx. 1.5 tbsp) Sea salt — Non-iodized; creates a 2-2.5% brine suitable for legumes
- 1 quart Water — Filtered and chlorine-free
- 2 tbsp Starter culture — Backslope with active sauerkraut juice or whey to ensure rapid acidification
- 3 cloves Garlic — Smashed
- 1 tsp Cumin — Optional
Equipment
- Glass jar
- Weight
- Cloth cover
- Pot
Instructions
Soak and skin
Soak fava beans in plenty of water for 24 hours. Drain and pinch the skins off the beans; this improves texture and reduces bitterness in the final ferment.
Time: 24 hours
Tip: If using fresh fava beans, skip the soak and go straight to shelling.
Cook and cool
Boil the beans in fresh water until tender but still holding their shape (al dente). Crucially, drain and allow the beans to cool completely to room temperature (below 30°C/86°F) before proceeding. Adding hot beans to the brine will kill the lactic acid bacteria.
Time: 45-60 min
Tip: Do not overcook; mushy beans will create a cloudy, unappealing ferment.
Brine preparation
Dissolve the sea salt into the filtered water. Stir in the starter culture (sauerkraut juice or whey). This 'jumpstarts' the fermentation, which is a vital safety measure for high-protein, low-acid substrates like cooked beans to prevent the growth of pathogens.
Time: 10 min
Tip: Use a digital scale for salt for the most accurate 2-2.5% brine.
Combine and ferment
Place garlic, cumin, and cooled beans into a clean jar. Pour the brine over the beans until fully submerged. Use a fermentation weight to keep beans below the liquid line. Seal with an airlock and ferment at 18-22°C.
Time: 7-14 days
Tip: Check the pH after 7 days; it must be 4.6 or lower for long-term safety.
Safety check and store
Once the beans are pleasantly tangy and the brine is cloudy, verify the acidity. If the pH is below 4.6, move the jar to cold storage. The flavor will continue to mellow and develop in the refrigerator.
Time: 10 min
Tip: Always use clean utensils when scooping beans from the jar.
Fermentation Timeline
- Day 1-3: Start — Fermentation initiates.
- Day 4-7: Active — Tang develops.
- Day 8-10: Ready — Sour, flavorful beans.
Signs of Success & Spoilage
Good signs
- Cloudy brine
- Tangy aroma
- Firm beans
- Bubbles
Warning signs
- Mold
- Slimy texture
- Off odors
- Mushy beans
Troubleshooting
- Bitter aftertaste
- Cause: Skins left on or insufficient fermentation time. Solution: Ensure skins are removed during prep. Allow the ferment to continue for a few more days to let the acids balance the tannins.
- White film on surface
- Cause: Kahm yeast growth due to oxygen exposure or warmer temperatures. Solution: Carefully scrape off the film. It is harmless but can affect flavor. Ensure the weight is keeping the beans submerged and check the seal of your airlock.
- Slow fermentation
- Cause: Temperature too low or lack of starter culture. Solution: Move the jar to a slightly warmer spot (20-22°C). Always use a starter culture with cooked legumes to ensure a safe, rapid drop in pH.
Storage
Refrigerate in brine Keeps 2-3 months. Serve as mezze or in salads.
Health Benefits
- Protein
- Fiber
- Iron
- Probiotics
- Folate
Serving Suggestions
- Mezze platter
- Ful medames base
- Salad topping
- Hummus alternative
- Side dish
Related Legumes & Soy Ferments
Other Lactic Acid Ferments
- Sauerkraut — Vegetable
- Kimchi — Vegetable
- Kefir — Dairy
- Pickles — Vegetable
- Yogurt — Dairy
- Hot Sauce — Condiment
- Water Kefir — Beverage
- Kraut-Chi — Vegetable