What You Need to Know
When kuzu starch (extracted from Pueraria lobata root) is heated in water, its amylopectin molecules swell and form a helical structure that traps water molecules (gelation). The high viscosity of the gel matrix prevents bubble coalescence in foams. Upon cooling, hydrogen bonds strengthen the network (retrogradation).
Creates stable, glossy foams without egg whites or gelatin, ideal for vegan desserts and delicate confections where a smooth, melt-in-mouth texture is desired.
Key Parameters
Temperature
75°C
62°C - 85°C
Time
8 min
5 min - 15 min
Equipment
Steps
- 1.
Kuzu-mochi (Kyoto): Creates translucent, jiggly texture without animal products
- 2.
Warabimochi topping (Kansai region): Provides stable foam that holds kinako (roasted soybean flour)
The Science
Primary Reaction
Starch gelatinization (62-67°C)