Clean the fish and cover it with a marinade of olive-oil and vinegar. Soak for an hour. Fill the fish with chopped bacon and mushrooms, put into a baking-pan with slices of bacon underneath and on top, and sufficient boiling water. Bake for forty minutes, cover with slices of tomatoes and half of a sweet green pepper chopped fine. Dot with butter and bake for twenty minutes more.
To create the sauce stir in a tablespoonful of butter rolled in flour, add one teaspoonful of sugar and two teaspoonfuls of grated onion. Dilute with boiling water if too thick, bring to the boil, pour over the fish, and serve.
"I Love Cooking, and All Things Fish"