Variation. Add 1 cup of raisins to the batter.
Fluffy apple juice frosting
1 cup sugar
½ cup apple juice
Pinch of salt
1 tablespoon lemon juice
2 egg whites, stiffly beaten
Mix sugar, apple juice, salt, and lemon juice. Cook until the sirup forms a soft ball (234° to 240° F.) when a little of it is dropped into a cup of very cold water.
Pour very slowly over stiffly beaten egg whites, beating constantly. Continue beating until mixture stands in soft peaks.
Spread between layers and over top and sides of cake.