14 ounces bittersweet chocolate
3 1/3 tablespoons butter
1 1/2 tablespoons all-purpose flour
1 teaspoon water
Preheat oven to 400 degrees F ( 200 degrees C). Grease and flour one 9 inch round pan. Bring eggs to room temperature and separate. Melt dark chocolate and butter or margarine over low heat. Beat egg yolks, flour, and water. Add the chocolate mixture. Beat the egg whites, and fold into the chocolate batter. Pour into prepared pan, and bake for 20 to 30 minutes.