Ingredients
3 1/3 cups cake flour (not self-rising)
3/4 cup (1 1/2 sticks) unsalted butter, softened
2 1/4 cups sugar
3 large eggs, at room temperature
6 tablespoons red food coloring
3 tablespoons unsweetened cocoa
1 1/2 teaspoons vanilla extract
1 1/2 teaspoons salt
1 1/2 cups buttermilk
1 1/2 teaspoons cider vinegar
1 1/2 teaspoons baking soda
Preparation