What You Need to Know
The low‑oxygen environment suppresses oxidation and promotes Maillard browning at 140–165 °C, while the surrounding earth acts as an insulating layer that maintains a steady heat flux. The slow heat transfer allows proteins to denature and collagen to gelatinize, and starches to gelatinize and lose moisture, resulting in tender textures and caramelized surface flavors.
The Science
Primary Reaction
Maillard browning, gelatinization, dehydration