Preheat oven to 350 degrees F (175 degrees C). Grease baking dish with cooking spray or butter

In a large bowl, mix together sugar, oil, and eggs and set aside; In another bowl, add food coloring and vinegar into the buttermilk; Sift flour, add baking soda to the flour.

Gradually add flour mixture and buttermilk mixtures alternately to the sugar mixture. Mix well with a whisk or wooden spoon; if you have an electric mixer this will make your work easier and faster.

Stir 1 teaspoon vanilla into batter; Pour batter into prepared pans;

Bake for 20 to 25 minutes, or until done.

Remove from oven, and cool on out