Rainbow Biscuit

Place the flour, sugar, and cold butter cut into small pieces in a bowl

Mix with your fingertips until you form a crumbly mixture

Add the egg yolks and vanilla sugar, and mix well to obtain a homogeneous dough

Divide the dough into five equal parts

In each part, add some drops of food coloring

Mix well to ensure the color is evenly distributed in the dough

Mold the dough into various shapes using your hands or a modeling tool, similar to clay

Place the biscuit shapes on a baking sheet lined with parchment paper and dust with flour

Bake at 200°C for 20 minutes, or until the edges start to golden.