Preheat the oven to 350 degrees. Flour 2-8 inch cake pans or line two cupcake tins with paper liners.

Whisk together the flour, cornstarch, sugar, baking soda, cocoa, and salt. Set aside.

Whisk together the eggs, oil, milk, food color, vanilla, and vinegar in the bowl of an electric mixer. Stir in the dry ingredients until smooth.

Divide between your prepared pans.

Bake the cake for 30 minutes or until a toothpick comes out clean. Bake cupcakes 15-18 minutes or until a toothpick comes out clean.