Chocolate Sheet Cake - cooking recipe

Ingredients

2 c. flour
2 c. sugar
1 tsp. soda
1 tsp. salt
3 1/2 Tbsp. cocoa
1/2 c. shortening
1 stick margarine
1 c. water
2 beaten eggs
1/2 c. buttermilk or sour milk

Preparation

Mix first 4 ingredients in large bowl.
In saucepan, put cocoa, shortening, margarine and water; bring to a boil and pour over flour mixture.
Mix.
Add eggs and buttermilk or sour milk. Put in greased 10 x 16-inch jelly roll pan.
Bake for 20 minutes or until done at 400\u00b0.
Don't overbake.
Start preparing icing as soon as cake is in the oven.