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Does Cooking Duration Change Based On Fish Thickness?

April 5, 2026

Quick Answer

Cooking duration may vary based on fish thickness, but general guidelines apply for fish cooked via plank grilling or plank cooking. For example, a 1-inch thick fish might require 8-12 minutes of cooking time, while a 2-inch thick fish would need 12-15 minutes. Adjust cooking times accordingly.

Understanding Fish Thickness and Cooking Times

When cooking fish on a plank, it’s essential to consider the thickness of the fish to ensure even cooking and prevent overcooking. A general rule of thumb is to cook fish for 8-12 minutes per inch of thickness. This allows for a safe internal temperature of 145°F (63°C) without overcooking the exterior.

Measuring Fish Thickness

To measure fish thickness, use a ruler or a thickness gauge to determine the exact thickness. For example, a salmon fillet that measures 1.5 inches (3.8 cm) thick would require 13.5 minutes of cooking time (8.5 minutes per inch). Be sure to measure the thickest part of the fish, as this will affect cooking time.

Adjusting Cooking Times for Plank Cooking

Keep in mind that plank cooking times may vary based on the type of plank used, the heat of the grill, and the desired level of doneness. As a general rule, start with the recommended cooking time and check the fish for doneness every 2-3 minutes. Use a meat thermometer to ensure the internal temperature reaches 145°F (63°C). If using a plank, it’s also essential to rotate the fish every 2-3 minutes to prevent hot spots and ensure even cooking.

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