Red Velvet Marble Cake - Edible Nashville

Ingredients

• 3 cups flour
• 2 1/2 cups granulated sugar
• 1 cup (2 sticks) unsalted butter, softened
• 6 large eggs, room temperature
• 1 1/2 cups full-fat sour cream
• 2 teaspoons pure vanilla extract
• 2 teaspoons baking powder
• 1 teaspoon kosher salt
• 1/3 cup unsweetened cocoa powder
• 1 teaspoon cider vinegar
• 1 teaspoon red food coloring
• 1/2 teaspoon baking soda