Recipe with video instructions: How to make the perfect macarons, according to science. Ingredients: 3 egg whites, or 100 gram egg whites, aged and room temperature, 1/4 cup, or 55 grams, caster sugar, 1/4 teaspoon cream of tartar, 2 cups, or 260 grams, powdered sugar, 1 cup, or 115 grams, fine almond flour , Gel food coloring , For the vanilla buttercream:, 1/4 cup unsalted butter, 3/4 cup, plus 2 tablespoons, or 100 grams, powdered sugar, 1 teaspoon milk, 1/2 teaspoon pure vanilla extract
