- For the dough
-
7 ¾ oz of white flour T45
-
4.9 oz of semi-salted butter
-
4.6 oz of brown sugar to add a crispy, caramelized touch, or muscovado sugar, for a more pronounced and distinctive flavor
-
2.1 oz of egg yolks Be careful not to add any egg whites—it's the yolks that give it its crispiness
-
1 baking powder
-
1/2 vanilla or, if vanilla extract isn't available, vanilla flavoring, which is cheaper than pure vanilla, or vanilla pulp.