How to Cook Shrimp — The 90-Second Window

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Shrimp cook in sixty to ninety seconds per side over high heat — perhaps the tightest window of any common protein. At the moment the flesh turns from translucent grey to opaque pink-white and curls into a loose C shape, the shrimp is done. Ten seconds beyond that, it becomes rubbery. Twenty seconds, and it is chalk. The internal target is 57°C/135°F, but no home cook is inserting a probe into a shrimp — your eyes and your tongs are the thermometer. This is where the dish lives or dies: recognising the C-curl. A properly cooked shrimp curls into an open C — the tail and head ends approach each other but do not touch. An overcooked shrimp curls into a tight O, the muscle fibres contracted so severely that the moisture has been wrung out. An undercooked shrimp barely curves at all and has a glassy, translucent centre. The C is your target. Every time. Species matters. Gulf White shrimp (Litopenaeus setiferus) are the workhorse of American kitchens — sweet, firm, and forgiving. Tiger prawns (Penaeus monodon) are larger, meatier, with a more assertive mineral flavour and a slightly wider cooking window due to their size. Spot prawns (Pandalus platyceros), harvested from the cold Pacific, are among the finest crustaceans on earth — sweet as lobster, delicate as crab, and so perishable they should be cooked within hours of purchase. Their window is even tighter than standard shrimp. Quality hierarchy: Level one — the shrimp is cooked through, pleasantly firm, and seasoned. Level two — the exterior carries a light sear with Maillard browning, the interior is just opaque with a faint translucency at the very centre, and the natural sweetness of the shellfish comes through. Level three — transcendent: the shrimp snaps when bitten, releasing a burst of briny, sweet juice; the sear is golden and caramelised; the aroma is clean ocean and toasted shell; there is no rubberiness whatsoever, and the tail meat pulls cleanly from the shell. For sautéing, use a wide pan over the highest heat your stove produces. Pat the shrimp absolutely dry — moisture is the enemy of searing. Toss with oil (not butter, which burns at these temperatures), salt, and a pinch of sugar to accelerate browning. Lay them in a single layer without touching. Sear sixty seconds, flip, sear sixty seconds, remove. For poaching — the gentler method for shrimp cocktail — bring court-bouillon to 77°C/170°F, add the shrimp off heat, cover, and steep for five to six minutes. The gentle heat produces a more tender, less fibrous result. Sensory tests: the seared surface should be golden-pink, not grey. The aroma should be sweet and marine, never fishy or ammoniac. Squeeze gently between finger and thumb — the flesh should yield slightly, then spring back.

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