Vanilla 4-Layer Cake | Baking Haven

Ingredients

• 4 egg whites ((1 1/4 oz or 35 g each))
• 4 oz butter, unsalted
• 7 oz sugar, white granulated
• 10.5 oz buttermilk (or sour milk (see directions below))
• 8.5 oz flour, all-purpose (plain)
• 1 teaspoon baking powder
• 0.5 teaspoon baking soda
• 1 teaspoon vanilla extract
• 0.5 teaspoon salt
• 2 teaspoon butter, unsalted ((to grease pans))
• 1 tablespoon flour, all-purpose (plain) ((for greased pans))
• 6 oz butter, unsalted
• 2 pounds unsweetened cocoa powder
• 2 oz milk, fresh whole
• 2 teaspoon vanilla extract
• Additional milk, fresh whole ((up to a few tablespoons for frosting consistency))