Luscious Orange Sauce

½ cup sugar

3 tablespoons Swans Down Cake Flour

Dash of salt

¾ cup water

1 egg yolk, slightly beaten

1 tablespoon butter

½ cup orange juice

2 tablespoons lemon juice

¾ teaspoon grated orange rind

¼ teaspoon grated lemon rind

Combine sugar, flour, and salt in top of double boiler; add water and egg yolk, mixing thoroughly. Place over rapidly boiling water and cook 10 minutes, stirring constantly. Remove from boiling water; add butter, fruit juices, and rinds. Serve hot or cold. Makes 1½ cups sauce.