Foam Sauce
¹⁄₄ lb. butter
1 cup castor sugar
¹⁄₄ cup boiling water
White of 1 egg
1 tea-spoon vanilla
2 table-spoons wine, fruit juice or syrup
Beat the butter to a cream. Add the sugar, vanilla and wine. Just before it is served stir in the boiling water. Then add the well-beaten white of an egg, and beat until the sauce is foamy.