Sous vide — cooking food sealed in vacuum bags in a precisely controlled water bath — eliminates the temperature gradient problem. In traditional cooking, the outside of a steak reaches 90°C+ while the centre hits 55°C (medium-rare). Sous vide holds the entire piece at exactly 55°C, edge to edge. The result is mathematically perfect doneness with zero guesswork. Combined with a finishing sear for Maillard browning, it produces results that are difficult to achieve any other way.
Food is sealed in vacuum or zip-lock bags with seasonings. Submerged in water held at the exact target temperature by an immersion circulator. Time is generous — unlike traditional cooking where 30 seconds overcooks a steak, sous vide holds food at the target temperature for extended periods (1-4 hours for steaks, up to 72 hours for tough cuts). The food can't overcook as long as the water temperature is correct. After the bath, proteins need a finishing sear — blowtorch, screaming hot cast iron, or deep-fry for 30 seconds — to develop crust and colour.
For steak: 54°C for 1-2 hours (medium-rare edge to edge), pat dry, sear in smoking hot cast iron with butter, 45 seconds per side. For chicken breast: 63°C for 1.5 hours — the juiciest, most evenly cooked chicken breast you'll ever eat. For 72-hour short ribs: 62°C for 72 hours — the collagen converts to gelatin while the meat stays medium-rare. This is physically impossible with any other cooking method. The ice bath trick: after sous vide, plunge bag in ice water to chill rapidly, then sear from cold — gives a thicker crust with less grey band underneath.
Not searing after the bath — sous vide without a sear produces grey, unappealing food. Bag not sealed properly — water intrusion ruins texture. Not patting completely dry before searing — moisture prevents browning. Too short a time for tough cuts — 72-hour short ribs are transformative. Over-relying on sous vide for everything — some foods are better with traditional methods. Cooking vegetables too long — they turn mushy.