Description
A purpose-built outdoor fermentation space optimizing microbial succession through seasonal temperature modulation.
Technical
Jangdokdae utilizes diurnal/seasonal thermal cycling to promote sequential dominance of Bacillus subtilis (early), lactic acid bacteria (mid), and osmophilic yeasts (late) during doenjang/ganjang production. The porous onggi pottery vessels allow controlled gas exchange while filtering harmful UV.
Culinary Significance
Critical for developing the complex umami (glutamates/ribonucleotides) and phenolic profiles in traditional Korean fermented soy products.
Science
Primary Reaction
Lactic acid fermentation
Parameters
Temperature
Season-dependent (15°C spring/fall)°C optimal
-10°C to 35°C range
Time
18 months
6 months – 3 years
Equipment
Onggi pots (feldspar-rich clay)Bamboo mat coversStone weight system