Naked Lemon and Olive Oil Layer Cake

Ingredients

• Cake
• 3 cups all-purpose flour
• 1½ teaspoons baking powder
• 1 teaspoon baking soda
• 1 teaspoon salt
• 3 large eggs
• 1½ cups granulated sugar
• 1 cup extra-virgin olive oil
• 1½ cups buttermilk
• 2 tablespoons lemon zest
• ¼ teaspoon lemon extract (optional)
• 2 teaspoons vanilla extract
• Frosting
• 2 sticks unsalted butter, at room temperature
• 4½ cups sugar
• Zest of 1 lemon
• 1 teaspoon pure vanilla extract
• ¼ cup whole milk
• Lemon zest, as needed for garnish
• Berries, as needed for garnish