For the cupcake – 1 cup unsalted butter room temp – 2 cups granulated sugar – 4 large eggs – 1 cup whole milk or 2% milk – 1 tablespoon white vinegar – 1 & 1/2 teaspoons vanilla extract – 2 & 1/2 cups all-purpose flour – 2 & 1/2 teaspoons baking powder – 1/4 teaspoon kosher salt For the buttercream frosting – 1 & 1/2 cups unsalted butter room temp – 1 & 1/2 teaspoons vanilla extract – 1/2 teaspoon kosher salt – 4 & 1/2 cups powdered sugar – 2 tablespoons heavy cream – pink food coloring optional – sprinkles optional