1 1/2 c. sugar
1/2 c. water
6 lg. marshmallows, chopped
2 egg whites, beaten stiff
1/4 tsp. baking powder
2 tsp. lemon juice

Boil sugar and water until mixture spins a thread when poured from spoon. Add marshmallows. Do not stir. Pour hot syrup over egg whites, beating constantly. Add baking powder and lemon juice. Beat until peaks form. Spread on cake.