Devil'S Food Mommie Cake
["5 Tbsp. cocoa", "1 egg yolk", "1 1/2 c. milk", "1/2 c. soft oleo", "2 c. sugar", "2 eggs", "2 c. sifted flour", "2 tsp. baking powder", "1/4 tsp. soda", "1 1/2 tsp. salt", "1 tsp. vanilla"]
["Cook cocoa, egg yolk and 1 cup milk, stirring until smooth and thickened.", "Cream oleo and sugar; add eggs and beat well.", "Blend in cocoa mixture.", "Add sifted dry ingredients alternately with 1/2 cup milk.", "Beat until smooth.", "Add vanilla.", "Pour into two 9-inch layer pans, lined on bottom with waxed paper.", "Bake in 350\u00b0 oven about 25 minutes.", "Cool and frost as desired.", "Can be frozen."]
["cocoa", "egg yolk", "milk", "oleo", "sugar", "eggs", "flour", "baking powder", "soda", "salt", "vanilla"]