Technical Cook-Time Reference & Quality-Gated Meals // No Fluff, Just the Instructions
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cast-iron ChartsDATASHEET // CT-CI-011
cast-ironSTATE: FRESHVERIFIED DATASHEET

How Long to Cook Blackened Shrimp (Peeled, 21/25 count) in the cast iron

Specification: 1 lb peeled, deveined 21/25-count shrimp, tossed in melted butter and heavy Cajun spice rub

Target Temp
Heat Waves
Ripping hot — 500°F+ (260°C+), pan visibly smoking
Stovetop Sear
Total Time
Clock Time
2–3 mins total (60–90 seconds per side)
Total Cook Window
Flip Mark
Flip Action
1m
Turnover Point
Internal Safe Temp
Thermometer Probe
145°F / opaque and curled into a loose "C"
USDA Safe Pull

3-Step Execution Protocol

1
Preheat & Prep

Heat cast iron skillet over Ripping hot — 500°F+ (260°C+), pan visibly smoking until lightly smoking. Prepare blackened shrimp (peeled, 21/25 count) (1 lb peeled, deveined 21/25-count shrimp, tossed in melted butter and heavy Cajun spice rub).

2
Cook & Flip

Cook for 2–3 mins total (60–90 seconds per side). Flip at the 1-minute mark for even browning.

3
Check & Rest

The shrimp curl into a loose C, not a tight O — a tight O means they are already overcooked and about to turn rubbery. Confirm internal temperature reaches 145°F / opaque and curled into a loose "C". Rest for 0 minutes before serving.

Verification Basis & Testing Rig

USDA FSIS 145°F seafood minimum internal temperature; blackening technique from Paul Prudhomme's Louisiana Kitchen (Morrow, 1984).

Pro Tip: A shrimp goes from raw to overcooked in the time it takes to walk to the fridge. Lay them out in a single layer with clear space between each one so they sear instead of steam, and pull them the instant they curl — residual pan heat finishes the last few degrees for you, and a crowded pan gives you boiled shrimp with black spice glued to the outside.
Want the complete meal with seasoning & sides?View Full Recipe

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