What You Need to Know
The preparation involves wrapping ketan (glutinous rice/Oryza sativa var. glutinosa) around spiced chicken filling in Musa × paradisiaca leaves. Steam heat (100°C) facilitates amylopectin hydration while leaf-derived polyphenols (particularly luteolin and anthocyanins) migrate into the rice. The waxy leaf cuticle acts as a semi-permeable membrane during the 3-hour process.
The slow steaming yields rice with springy texture that holds shape when unwrapped, infused with herbaceous notes from the leaves. Traditional cooks test doneness by pressing the packet - properly cooked lemper should rebound slightly while maintaining structural integrity.
Key Parameters
Temperature
95°C
90°C - 100°C
Time
45 minutes
30 minutes - 1 hour
Equipment
Steps
- 1.
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The Science
Primary Reaction
Starch gelatinization