Lemon Orange Cake

INGREDIENTS

• 1 cup butter, softened
• 1/4 cup shortening
• 2 cups sugar
• 5 eggs
• 3 cups all-purpose flour
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1 cup buttermilk
• 1 teaspoon vanilla extract
• 1/2 teaspoon lemon extract
• FROSTING:
• 1/2 cup butter, softened
• 3 tablespoons orange juice
• 3 tablespoons lemon juice
• 1 tablespoon grated orange peel
• 1 tablespoon grated lemon peel
• 1 teaspoon lemon extract
• 5 1/2 cups confectioners' sugar