What You Need to Know
During roasting, protein denaturation begins around 60 °C, causing muscle fibers to contract and expel water, which firms the meat. Fat rendering starts at 40–50 °C, contributing to juiciness and flavor, while the Maillard reaction above 140 °C generates brown crust and complex flavor compounds such as melanoidins and pyrazines.
The Science
Primary Reaction
Maillard reaction