Lemon & Lime Macarons

Ingredients

• 1 1/8 cups almond meal super fine, /flour
• 3/4 cup sugar confectioner's
• 1 lemon or lime
• 5 15/16 tablespoons egg white 3 large egg whites
• 4 3/8 tablespoons granulated sugar
• 1/4 teaspoon cream of tartar
• 1/4 teaspoon lemon extract or lime juice
• 3 drops green food coloring or yellow, optional
• 8 tablespoons unsalted butter softened
• 1 1/2 cups powdered sugar
• 2 tablespoons heavy cream
• 1 lemon or lime
• 1/2 teaspoon vanilla extract
• 1/4 teaspoon lemon extract