Mixed Berry Layer Cake Ingredients For the Sponge Cake Layers: 2 cups (240g) all-purpose flour 2 teaspoons baking powder 1/2 teaspoon salt 1 cup (230g) unsalted butter, softened 1 1/2 cups (300g) granulated sugar 4 large eggs, at room temperature 2 teaspoons vanilla extract 1 cup (240ml) whole milk, at room temperature For the Berry Compote: 1 cup (150g) mixed berries (strawberries, blueberries, raspberries, blackberries) 1/4 cup (50g) granulated sugar 1 tablespoon lemon juice 1 tablespoon...