Red Velvet Cake
["1 c. margarine", "2 c. sugar", "2 eggs", "1 Tbsp. vinegar", "1 Tbsp. cocoa", "2 1/2 c. cake flour", "1 1/2 tsp. soda", "1/2 tsp. salt", "1 c. buttermilk", "2 oz. red food coloring", "1 tsp. vanilla"]
["Cream sugar and butter.", "Blend in eggs and beat well.", "Make a paste of the vinegar and cocoa.", "Add to the creamed mixture. Sift together dry ingredients and add alternately with buttermilk. Mix in the vanilla and red food coloring.", "Bake in 3 greased and floured 9-inch layer pans at 350\u00b0", "for 20 to 30 minutes, or until done."]
["margarine", "sugar", "eggs", "vinegar", "cocoa", "cake flour", "soda", "salt", "buttermilk", "red food coloring", "vanilla"]