Chocolate Sheath Cake
["2 sticks margarine", "1 c. hot water", "3 Tbsp. Hershey's cocoa", "2 c. sugar", "2 c. flour", "2 eggs", "1 tsp. cinnamon", "1 tsp. vanilla", "1/2 c. buttermilk with 1 tsp. baking soda or sour cream"]
["Substitute for buttermilk: 1/2 cup milk with 1 teaspoon vinegar and 1 teaspoon baking soda."]
["margarine", "water", "cocoa", "sugar", "flour", "eggs", "cinnamon", "vanilla", "buttermilk"]