how long does it take to cook frozen fish on the grill
Step 5. Put the packet on the grill, seam-side up. Cook a thinner piece of fish -- under 1 inch thick -- for about 8 minutes, or thicker cuts for up to 10 minutes.Remove the fish from the grill and open the packet. Brush the fish with cooking oil or melted unsalted butter.tep 7. Seal the foil packet again and return the fish to the grill, seam-side down this time, to promote even cooking. Cook the fish for about another 8 to 10 minutes, just until the flesh is opaque all the way through.