Sous Vide Cooks by Time and Temperature
Sous vide holds food in a sealed bag at a precise water-bath temperature, which means the food can never actually exceed that temperature — a steak set at 131°F (55°C) will come out an even medium-rare edge to edge, no matter how long it stays in (within reason), because there's no hot pan surface overcooking the exterior while the center catches up. The tradeoff is that sous vide alone doesn't brown anything, since it never gets hot enough for the Maillard reaction — a quick hard sear in a screaming-hot pan afterward is still necessary for color and crust.
Sources & methodology: These tips draw on established food-science references —
Harold McGee's food-science writing, America's Test Kitchen /
Cook's Illustrated testing, Serious Eats'
technique reporting, USDA food safety guidance,
and peer-reviewed food-safety research (including UC Davis
cutting-board studies) — not reworded recipe-blog consensus.