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2
Medium
Published 1995
First make the sauce. Gently fry the onion in the olive oil, then add the other vegetables and pour on the wine. Simmer, uncovered, until the vegetables are tender, then make a purée in a blender or food processor, and sieve into a clean saucepan. Season to taste.
Skin the fish fillets and brush them all over with olive oil. Use the rest to lightly oil an ovenproof dish, and lay the fil
