Ingredients:

• 14 ounces of cake flour
• 10 ounces of buttermilk, room temperature or slightly warm
• 5 ounces of room temperature egg whites
• 13 ounces of granulated sugar
• 1 teaspoon of salt
• 1 tablespoon of baking powder
• 4 ounces of vegetable oil
• 6 ounces of unsalted, softened butter
• 2 teaspoons of vanilla
• ½ teaspoon of baking soda

For the Frosting:

• 3 ounces of flour
• 14 ounces of granulated sugar
• 16 ounces of whole milk
• 16 ounces of room temperature unsalted butter
• 2 teaspoons of vanilla extract
• ¼ teaspoon of salt

Preparation:

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