Mix the butter with 3 tea-spoons of flour, bring to a boil, pour 1.5 cups of hot cream (or milk) into it. Add 2 oz (50 gm) of grated Swiss cheese, 1.5 cups of slightly heated cream (or milk) shaken with 3 eggs. Mix well and pour the mixture over the dish. Sprinkle with finely ground dried bread-crumbs, grated cheese, and butter. Have it gradually browned in an oven.