Texas Sheet Cake
["2 sticks margarine", "4 Tbsp. cocoa", "1 c. water", "2 c. sugar", "1/2 tsp. salt", "2 eggs", "2 c. flour (unsifted)", "1 tsp. soda", "1/2 c. sour cream"]
["In saucepan, bring margarine, cocoa and water to a boil. Remove from heat and add remaining ingredients.", "Mix well and pour into greased pan.", "Make icing while cake is baking."]
["margarine", "cocoa", "water", "sugar", "salt", "eggs", "flour", "soda", "sour cream"]