Sous Vide Was Invented to Solve a Foie Gras Problem

In 1974, Georges Pralus, a chef in the Rhône-Alpes region of France, had a problem: his foie gras terrine was shrinking by nearly 50% during cooking, which was both expensive and texturally problematic. He contacted Bruno Goussault, a food scientist at the CERIA (Centre de l'Enseignement et de Recherches des Industries Alimentaires) in Brussels, for help.

Goussault's solution was to seal the foie gras in vacuum bags and cook it in a precisely controlled water bath at a temperature far lower than conventional oven cooking — around 60–70°C rather than 150–180°C. The lower temperature denatured the proteins more gently, preventing the violent contraction that drives moisture and fat out of the tissue. Shrinkage dropped to less than 5%. The texture was smoother than anything achievable by conventional means.

Around the same time, Joël Robuchon and his team in Paris were independently experimenting with similar vacuum and low-temperature methods for vegetables and proteins. The two developments converged in French haute cuisine, where the technique spread among Michelin-starred kitchens through the 1980s under the name "cuisine sous vide" — literally "under vacuum" cooking.

Commercial immersion circulators capable of holding a water bath to within 0.1°C were available to restaurant kitchens by the 1990s. The first consumer-grade circulators, sold by companies like Polyscience and later Anova, appeared around 2009. Anova's Precision Cooker, launched in 2013, put sous vide in home kitchens at under $200.

The physics haven't changed since 1974. Water is a far better heat conductor than air, and a controlled water bath at 54°C will cook a steak to exactly 54°C throughout — something no oven or grill can reliably achieve.