Salmon a la Chambord

Put a large middle cut of salmon into a saucepan with sliced carrots and onions, a bunch of parsley, two tablespoonfuls of butter and two cupfuls each of white wine and white stock. Season with salt and pepper-corns, cover, and simmer slowly for an hour. Take up the fish carefully and keep warm. Strain the liquid and thicken with flour cooked brown in butter. Add half a cupful of stewed and strained tomatoes, the juice of a lemon, two tablespoonfuls of butter, and a teaspoonful of anchovy essence. Pour over the fish and serve.