Orange-Olive Oil Layer Cake | America's Test Kitchen

Ingredients

• 2 2/3 cups (13⅓ ounces/378 grams) all-purpose flour
• 1 1/2 teaspoons baking powder
• 1 1/4 teaspoons table salt
• 4 large eggs plus 1 large yolk
• 2 cups (14 ounces/397 grams) sugar
• 1 tablespoon grated orange zest
• 1 1/3 cups extra-virgin olive oil
• 1 cup plus 2 tablespoons milk
• 1/4 cup Grand Marnier or other liqueur