What You Need to Know
By lowering the boiling point of water to 50–60 °C at 0.1 atm, vacuum cooking prevents evaporation and surface drying while enabling proteins to denature and collagen to hydrolyze at temperatures that would normally cause browning. The reduced pressure also suppresses the Maillard reaction until higher temperatures are reached, producing caramelized, umami‑rich compounds such as melanoidins and pyrazines while preserving delicate aromatics. Precise temperature control via immersion circulators ensures consistent results across different foods.
The Science
Primary Reaction
Protein denaturation and collagen hydrolysis