German Chocolate Cake - cooking recipe

Ingredients

1 pkg. Baker's German sweet chocolate
1/2 c. boiling water
2 c. sugar
1 tsp. vanilla
1 tsp. soda
4 egg whites
2 1/2 c. sifted Swans Down cake flour
1 c. butter or margarine
4 egg yolks, unbeaten
1/2 tsp. salt
1 c. buttermilk

Preparation

Melt chocolate in 1/2 cup boiling water.
Cool.
Cream butter and sugar until light and fluffy.
Add egg yolks, one at a time, and beat well after each.
Add melted chocolate and vanilla.
Mix well.
Sift salt, soda and flour.
Add alternately with buttermilk to chocolate mixture, beating well.
Beat until batter is smooth.