Américaine Sauce for fish, a recipe from the Worldwide Gourmet

Ingredients

• - 1 Lobster or prawn shell, cut up
• - 100 g (3 1/2 oz.) chopped tomatoes
• - 1 tbsp. Tarragon
• - 30 g (1 oz.) chervil
• - 1 tbsp. chopped shallot
• - 200 ml (3/4 cup) dry white wine
• - 4 tbsp. heavy cream
• - 4 tbsp. cognac
• - 100 ml (6 tbsp.) oil
• - 125 ml (1/2 cup) butter
• Salt and pepper