Sous Vide Steak

Steps

1. season40 min
   uncovered on a rack, refrigerated; 40 minutes minimum, up to 24 hours
   steak + salt on every face, then left to sit. Salt applied and left is a dry brine: it first draws moisture to the surface, then that brine is reabsorbed carrying salt into the muscle, so the seasoning is inside the meat rather than sitting on it. The second half of that exchange is why timing matters — salt applied 5 minutes before bagging leaves a wet surface with no time to reabsorb, which is the worst of both, and it will fight the sear later. Pepper goes on now or after the sear; coarse pepper held in a long low bath turns dull and slightly bitter, so cook's choice, but do not use a bold spice rub here — save it for after the crust is built
2. sous-vide120 min
   bath held at 130°F / 54°C, bag fully submerged, 1 to 3 hours
   bagged steak, air displaced, lowered into a circulating bath already at temperature. This is the whole method: the water is set to the finished doneness, so the steak asymptotically approaches 130°F and then stops, edge to edge, with none of the grey gradient a pan produces. Time is a separate dial from temperature — it buys tenderness and pasteurization, not doneness — so 1 hour and 3 hours give the same pink, and only the texture differs. Do not exceed about 3 to 4 hours below 130°F: past that the safety margin thins and enzymatic breakdown starts turning the texture mealy rather than tender. Displace the air by lowering a partly closed zip bag into the water until pressure forces the air out, then seal above the waterline; trapped air floats the bag and anything above the water is simply not cooked. Weigh a stubborn floater down with a spoon. Add 60 to 90 minutes from frozen. Bagging raw garlic is the one ingredient to refuse — a sealed, oxygen-poor, low-temperature environment is exactly the condition botulinum spores want
3. prep5 min
   out of the bag, paper towels, worked until the surface squeaks
   cooked steak, patted absolutely dry on every face including the edges. This step fails more sous vide steaks than any other, and the reason is physics rather than fussiness: the surface leaves the bag at 100 percent humidity, and water boiling off at 212°F holds the surface at 212°F. Browning does not begin in earnest until roughly 300°F, so every drop left on the meat is buying evaporation time with the sear budget you were going to spend on crust. A wet steak in a hot pan greys and steams; a dry one browns in under a minute
4. sear3 min
   cast iron, smoking hot, 30 to 60 seconds per side
   steak + a film of oil in a pan hot enough to smoke, pressed flat, flipped once or flipped often — either works. Keep it under about a minute per side. The steak is already at its finished temperature, so every second in the pan is heat driving inward and thickening a band of overcooked meat under the crust; the entire argument for sous vide is that this band stays thin. Sear the fat cap first, held on edge with tongs, so the rendered fat greases the pan for the flat faces. If butter or herbs are going in they go in the last 30 seconds, not at the start — butter's milk solids burn well below the temperature this pan is at
5. rest3 min
   on a warm board, uncovered
   seared steak, given about 3 minutes, then sliced against the grain. This is a short rest by conventional standards and deliberately so: a pan-roasted steak rests because a steep internal temperature gradient drove juices toward the centre and they need time to redistribute, and a sous vide steak has almost no such gradient. What the rest actually does here is let the surface, which just touched 400°F, stop conducting heat inward. Tenting under foil is wrong — trapped steam softens the crust you spent 3 minutes building