Texas Sheet Cake
["2 sticks margarine", "4 tsp. cocoa", "1 c. water", "2 c. flour", "2 c. sugar", "1 tsp. salt", "1 tsp. soda", "1 tsp. vanilla", "2 eggs", "1/2 pt. sour cream"]
["Bring to boil margarine, cocoa and water.", "Remove from heat and add flour, sugar, salt, soda and vanilla.", "Beat in eggs and sour cream.", "Pour into greased jelly roll pan (15 x 10 x 1-inch).", "Bake at 350\u00b0 for 20 minutes."]
["margarine", "cocoa", "water", "flour", "sugar", "salt", "soda", "vanilla", "eggs", "sour cream"]