Foolproof Cake - cooking recipe

Ingredients

3 c. flour
2 c. sugar
1/2 c. cocoa
1/2 tsp. salt
2 unbeaten eggs
1 c. oil or 3/4 c. margarine
1 c. sour milk
1 Tbsp. (level) soda
1 c. boiling water
2 tsp. vanilla

Preparation

Sift dry ingredients 3 times, then add to eggs, oil and milk mixture.
Add
1 cup boiling water and vanilla.
Put into a 9 x 12-inch pan.
Bake at 350\u00b0.