Technical Cook-Time Reference & Quality-Gated Meals // No Fluff, Just the Instructions
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cast-iron ChartsDATASHEET // CT-CI-010
cast-ironSTATE: FRESHVERIFIED DATASHEET

How Long to Cook Blackened Cod Fillet (1-inch thick) in the cast iron

Specification: 6–8 oz cod fillet, patted dry, dipped in melted butter, coated in heavy Cajun spice rub

Target Temp
Heat Waves
Ripping hot — 500°F+ (260°C+), pan visibly smoking
Stovetop Sear
Total Time
Clock Time
5–6 mins (2.5–3 mins per side)
Total Cook Window
Flip Mark
Flip Action
3m
Turnover Point
Internal Safe Temp
Thermometer Probe
145°F / flakes easily with a fork
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 cod fillet (1-inch thick) (6–8 oz cod fillet, patted dry, dipped in melted butter, coated in heavy Cajun spice rub).

2
Cook & Flip

Cook for 5–6 mins (2.5–3 mins per side). Flip at the 3-minute mark for even browning.

3
Check & Rest

The crust is charcoal-black on both sides — the technique is meant to look burnt; the blackness is spice carbon, not scorched fish. Confirm internal temperature reaches 145°F / flakes easily with a fork. Rest for 2 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), which introduced the method to home cooking.

Pro Tip: Blackening is the one time you actually want the pan smoking before the fish goes in — the black crust is spice carbon and you cannot get it under 500°F. Run the range hood on high and open a window: paprika-heavy rubs turn a kitchen into a fog bank the first time you do this, and the smoke alarm will not care that it is intentional.
Want the complete meal with seasoning & sides?View Full Recipe

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