Fermented Green Beans

1. Pack the Jar – Trim green beans and pack them tightly into a clean glass jar, standing upright. Add any optional flavorings (garlic, chili flakes, dill, peppercorns, mustard seeds).
2. Make the Brine – Weigh the jar contents (green beans + any water needed to fill). Multiply the total weight by 0.03 for a 3% brine (recommended) or 0.02–0.05 for a milder or stronger result. Dissolve that amount of salt in the water.
3. Add the Brine – Pour the salt brine over the beans until they are fully submerged. Leave about 2.5 cm (1 inch) of headspace at the top.
4. Submerge the Beans – Place a fermentation weight or small clean jar on top to keep the beans below the brine at all times. Beans exposed to air can develop mold.
5. Cover the Jar – Use an airlock lid (best) or a regular lid loosely fitted to allow fermentation gases to escape.
6. Ferment – Leave at room temperature (18–24°C / 65–75°F), away from direct sunlight. Taste from day 5. Continue fermenting until they reach your preferred level of tanginess, usually 5–14 days.
7. Refrigerate – Once tangy and crisp to your liking, seal the jar tightly and refrigerate. They will continue to ferment very slowly in the fridge.

Notes:

• Keeping the beans fully submerged is the most important safety step — beans exposed to air can grow mold.
• Cloudy brine is normal and healthy. White floating film (kahm yeast) is harmless — skim it off.

Storage:

• Keeps in the fridge for several months. Flavor deepens over time.

Swaps:

• Add whole garlic cloves, fresh dill, and red chili for a classic dilly bean flavor profile.

Tips:

• Use a digital scale for accurate salt ratios — this is the key to safe, consistent fermentation.
• Ferment at cooler temperatures (18–20°C) for a slower, crunchier result.