What You Need to Know
Sake kasu foam is produced through lactic acid fermentation of sake lees (Saccharomyces cerevisiae byproduct) with added sugars, creating a stable emulsion of proteins (glutelin, prolamin) and organic acids (lactic, acetic). The fermentation process breaks down residual starches into dextrins and simple sugars, while microbial activity (Lactobacillus spp.) enhances umami via glutamate decarboxylation.
Used as a light, airy garnish with umami depth in modern kaiseki, sauces, and desserts where dairy foam alternatives are undesirable.
Key Parameters
Temperature
22°C
18°C - 28°C
Time
4 days
48 hours - 7 days
Equipment
Steps
- 1.
Kasuzuke foam (Kyoto kaiseki): Lifts fatty fish flavors in sabazushi
- 2.
Sake kasu panna cotta (Modern washoku): Provides dairy-free creaminess
The Science
Primary Reaction
Lactic acid fermentation