German Chocolate Cake - cooking recipe

Ingredients

4 oz. German sweet chocolate
1/2 c. boiling water
1 c. butter
2 c. sugar
4 egg yolks, beaten
1 tsp. vanilla
2 1/2 c. sifted cake flour
1/2 tsp. salt
1 tsp. baking soda
1 c. buttermilk
4 egg whites, stiffly beaten

Preparation

Melt chocolate in boiling water.
Then cool.
Cream butter and sugar until fluffy.
Add egg yolks one at a time and beat well after each one.
Add chocolate mixture and vanilla.
Beat until light and fluffy.