Red Velvet Cake
["2 1/2 c. plain flour", "2 c. sugar", "2 tsp. soda", "2 tsp. cocoa", "1 Tbsp. vanilla", "1 (2 oz.) bottle red food coloring", "2 eggs", "1 c. buttermilk", "2 c. cooking oil", "1 tsp. salt", "1 Tbsp. vinegar"]
["Mix and beat well.", "Put equal amounts of batter into three 8 or 9-inch pans.", "Bake at 350\u00b0 until done, 30 to 40 minutes."]
["flour", "sugar", "soda", "cocoa", "vanilla", "coloring", "eggs", "buttermilk", "cooking oil", "salt", "vinegar"]