395g very ripe tomatoes |
Plunge into boiling water a few seconds, then into ice water. Remove skins. |
Remove seeds, cut into small pieces (makes 225g) |
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Layer three layers in a deep gratin dish: tomatoes, onions, basil, parmesan, pepper, oil, fish, lettuce |
Cook in moderately hot oven 1 hour, or until fish is beginning to be cooked through |