What You Need to Know
Porous clay allows gas exchange while buried placement maintains 12-18°C through soil's thermal mass. Anaerobic conditions develop as CO2 displaces oxygen, favoring lactic acid bacteria (LAB) like Lactobacillus spp. and yeast activity.
Creates complex umami profiles through gradual protein breakdown while preventing overheating that kills beneficial microbes.
Key Parameters
Temperature
15°C
10°C - 22°C
Time
1-3 months
2 weeks - 6 months
Equipment
Unglazed clay crock (3-15L capacity)Stone weightsBreathable cloth coverWooden tamper
Steps
- 1.
Korean doenjang (Joseon Dynasty): Develops deep savory notes through 6-month fermentation
- 2.
Japanese nukazuke (Edo Period): Maintains crisp texture in pickled vegetables