What You Need to Know
At 120–150 °C, collagen in proteins denatures into gelatin, while the sealed, porous clay environment traps steam that raises internal temperatures to 80–90 °C, allowing slow protein breakdown. The low heat limits Maillard browning, so surface searing is often performed before sealing, and the clay’s porosity releases moisture slowly, enhancing flavor.
The Science
Primary Reaction
Collagen denaturation to gelatin