Preheat your oven: Set it to 350°F (175°C) and prepare two 9-inch round cake pans by greasing and flouring them.
Cream the butter and sugar: In a large mixing bowl, beat together the softened butter and granulated sugar until the mixture is light and fluffy, which will take about 3-5 minutes.
Add the eggs: Incorporate the eggs one at a time, ensuring to mix well after each addition.
Introduce the flavor: Stir in the vanilla extract and red food coloring until everything is well blended.
Prepare dry ingredients: In another bowl, whisk together flour, baking soda, and salt.
Combine mixtures: Gradually add the dry ingredients to the wet mixture, alternating with the buttermilk. Mix until just combined.
Add vinegar: Stir in the vinegar at this point for that extra moistness.
Divide and bake: Pour the batter evenly into the prepared cake pans and smooth the tops. Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.
Cool the cakes: Allow the cakes to cool in the pans for about 10 minutes, then transfer them to a wire rack to cool completely.