What You Need to Know
Prolonged simmering (95-100°C) hydrolyzes collagen into gelatin via proteolytic breakdown while mechanical agitation from boiling emulsifies marrow lipids into water phase. Calcium release from bones stabilizes the oil-in-water emulsion.
Essential for authentic tonkotsu ramen's signature creamy texture and mouth-coating richness without separation.
Key Parameters
Temperature
98°C
95°C - 100°C
Time
15 hours
12 hours - 18 hours
Equipment
Pressure-resistant stockpot (prevents evaporation loss)Fine mesh skimmer (removes coagulated proteins)Chopstick bridge (prevents boil-over)
Steps
- 1.
Hakata-style tonkotsu ramen (Fukuoka): Creates the opaque, milky base broth
The Science
Primary Reaction
Collagen → Gelatin (hydrolysis)