Coffee Chocolate Cake
["3 c. flour", "1 c. cocoa", "2 tsp. soda", "2 tsp. baking powder", "2 tsp. vanilla", "1 c. salad oil", "2 1/2 c. sugar", "1 tsp. salt", "2 1/4 c. hot coffee", "4 egg yolks"]
["Sift together flour, cocoa, soda and baking powder.", "Add remaining ingredients.", "Mix well.", "Beat egg whites.", "Fold into batter last.", "Bake at 350\u00b0 for 1 hour or longer until done."]
["flour", "cocoa", "soda", "baking powder", "vanilla", "salad oil", "sugar", "salt", "hot coffee", "egg yolks"]