What You Need to Know
Bacillus subtilis and other soil-derived microbes hydrolyze proteins into free amino acids (glutamate, lysine) and short peptides, while enzymatic breakdown of complex carbohydrates produces volatile fatty acids (butyric, propionic) and sulfur compounds (methanethiol).
Used as a flavor enhancer in soups (e.g., Nigerian ogiri okpei), stews, and rice dishes, providing depth comparable to fermented soybean pastes but with distinct earthy/funky notes.
Key Parameters
Temperature
35°C
25°C - 45°C
Time
72 hours
48 hours - 14 days
Equipment
Earthenware pots (traditional)Cheesecloth for coveringWooden mortar/pestle for dehulling
Steps
- 1.
Soumbala (Burkina Faso): Primary umami source in grain porridges
- 2.
Ogiri okpei (Igbo (Nigeria)): Flavor base for bitterleaf soup
The Science
Primary Reaction
Proteolytic degradation of proteins