Chocolate Sheet Cake - cooking recipe

Ingredients

2 c. all-purpose flour
2 c. sugar
1/2 tsp. salt
1 tsp. soda
2 sticks margarine, melted
1 sq. bitter chocolate
1 c. water
1/2 c. buttermilk*
2 beaten eggs
1 tsp. vanilla

Preparation

*One tablespoon vinegar in 1/2 cup sweet milk makes buttermilk.