Texas Sheet Cake
["2 sticks margarine", "1 c. water", "4 Tbsp. cocoa", "2 c. self-rising flour", "2 c. sugar", "2 eggs", "1/2 c. sour cream"]
["Bring margarine, water and cocoa to boil.", "Add flour and sugar.", "Cream together with first mixture.", "Add eggs and sour cream.", "Bake in cookie sheet (15 1/2 x 10 1/2-inches) for 20 minutes at 350\u00b0."]
["margarine", "water", "cocoa", "flour", "sugar", "eggs", "sour cream"]