Frollini

In a large bowl, combine the 00 flour, fine sea salt, and baking powder. Whisk them together to ensure even distribution.

Add the cold, cubed Unsalted butter to the dry ingredients. Using your fingertips, rub the Unsalted butter into the 00 flour mixture until it resembles coarse sand, a technique known as 'sablage'.

Stir in the Granulated sugar, then add the Egg yolks, Lemon zest, and Vanilla extract to the mixture.