Macaroons recipe

Ingredients For the Macaron Shells: 100 grams egg whites (about 3 large eggs), at room temperature 140 grams almond flour (1 1/2 cups) 90 grams granulated sugar (just under 1/2 cup) 130 grams powdered sugar (1 cup) 1 teaspoon vanilla extract 1/4 teaspoon cream of tartar Gel food coloring (optional) For the Filling: 1 cup unsalted butter, softened 5 egg yolks 1/2 cup granulated sugar 1 teaspoon vanilla extract 3 tablespoons water A pinch of salt Instructions Prepare the Macaron Shells: Sift the almond flour and powdered sugar together into a bowl. In a separate bowl, beat the egg whites until foamy. Add the cream of tartar and continue to beat until soft peaks form.