Red Velvet Cake
["1/2 c. shortening", "1 1/2 c. sugar", "2 eggs", "2 Tbsp. cocoa", "1 tsp. salt", "1 tsp. vanilla", "2 oz. red food coloring", "1 c. buttermilk*", "2 1/2 c. sifted cake flour", "1 1/2 tsp. soda", "1 Tbsp. vinegar"]
["*Do not make your own buttermilk."]
["shortening", "sugar", "eggs", "cocoa", "salt", "vanilla", "red food coloring", "buttermilk", "cake flour", "soda", "vinegar"]