French Macarons

Bahan-bahan (40 porsi)

• 100 g egg whites (usually between 3–4 large egg whites)
• 1/4 teaspoon (1g) cream of tartar
• 1/2 teaspoon extract such as vanilla, almond, coconut, etc. (optional)
• 80 g superfine sugar (aka caster sugar, see note)
• 1 –2 drops gel food coloring (optional)
• 125 g almond flour
• 125 g confectioners’ sugar
• desired macaron filling (some options listed in notes)