Traditions
Method developed in mid-1970s France by Pralus and Troisgros for foie gras; Bruno Goussault systematized temperature curves at the Centre de Recherche et d'Études pour l'Alimentation, and the technique entered modernist kitchens in the 2000s.
How It Works
Vacuum-sealed protein sits in a water bath held within ±0.1°C of target. Because water cannot exceed bath temperature, the protein asymptotically approaches it — overshoot becomes physically impossible. Myosin denatures at 50°C, actin at 66°C; collagen melts to gelatin from 60°C given enough time. Held below actin threshold, even tough cuts soften without drying.
In Practice
the craftImmersion circulator (Anova, Joule, PolyScience) + chamber vacuum or zip-bag water-displacement. Steak 54°C × 1-4 hr; pork shoulder 74°C × 24 hr for sliceable; tough cut + 65°C × 48 hr = collagen-resolved while pink. Always finish with a sear — bag prevents Maillard during cook. Food-safety pasteurization tables (Baldwin 2010) by thickness and temperature are non-negotiable. Failure modes: pasteurization-time short of FDA guidance for thick poultry; unrendered fat at low temps tastes waxy.
Across the World
2 dishes · 2 cuisines
Through Time
Mid-1970s — Pierre Troisgros and Georges Pralus developed for foie gras to reduce shrink in *Restaurant Troisgros* (Roanne). Bruno Goussault at the Centre de Recherche et d'Études pour l'Alimentation systematized time-temperature curves through the 1980s. Thomas Keller's 2008 *Under Pressure* and Nathan Myhrvold's *Modernist Cuisine* (2011) brought it into modernist canon. Douglas Baldwin's *Sous Vide for the Home Cook* (2010) standardized safety.
Related cooking knowledge
Poaching is the mechanical ancestor — water below simmer — done without precision control. Confit shares the low-temperature principle but uses fat as medium. Braising overlaps in the collagen phase but adds aerobic Maillard. Sous vide demands a finishing sear from Pan Searing or Grilling for crust.