Red Cake
["2 Tbsp. cocoa", "1 tsp. soda", "1 Tbsp. vinegar", "1 Betty Crocker sour cream white cake mix", "1/2 oz. red food coloring"]
["Mix together cocoa, soda and vinegar.", "Mix cake mix as directed (whole egg).", "Add cocoa mix and red food coloring.", "Bake as directed on box."]
["cocoa", "soda", "vinegar", "sour cream", "red food coloring"]