Description
Sous‑vide sauce is a temperature‑controlled emulsion of fat and water that remains stable during extended cooking.
Technical
The technique relies on gentle protein denaturation (e.g., whey proteins) at 55–60 °C to increase viscosity and act as natural emulsifiers, while maintaining droplet sizes below 1 µm. Adding 0.5–1 % lecithin or mustard powder at 60 °C reduces interfacial tension, lowering the critical emulsion temperature by ~5 °C. Heating to 70–80 °C for 30–60 min stabilizes the emulsion without causing protein aggregation that would lead to phase separation.
Science
Primary Reaction
Protein denaturation and interfacial tension reduction leading to emulsion stabilization
Sensory Profile
Aroma ()
rich butterysavorysubtle nuttywarmsmooth
Origin & History
Civilization
French
Era