What You Need to Know
The low‑oxygen environment inside the sealed clay pot allows collagen to break down into gelatin at temperatures above 70 °C, while starches from barley or lentils gelatinize between 60–70 °C. A slight acidic pH (5.0–5.5) from vinegar or fermented grain accelerates protein denaturation and flavor extraction, and the porous clay permits gradual evaporation that concentrates the broth without scorching.
The Science
Primary Reaction
Collagen gelatinization and starch gelatinization under low‑oxygen sealed clay pot conditions