What You Need to Know
The technique relies on a controlled temperature gradient: the outer layers reach ~140–160 °C to trigger Maillard browning, while the interior stays ~90–100 °C for protein denaturation and starch gelatinization. Interlayer fat reduces moisture loss, keeping the interior tender and preventing the crust from drying.
The Science
Primary Reaction
Maillard browning, protein denaturation, starch gelatinization