Coffee Biscuit

Ingredients - 100 grs of butter - 100 grs of sugar - 250 flour grs - 6 grs yeast in dust - 1 cup of strong coffee - 2 yolks - 1 pinch of vanillina - 1 pinch of salt

Preparation to Work the butter softened with the sugar to add the vanillina and the salt.
To amalgamate well and to add the yolks, a flour pò, the coffee and the remaining flour up to form the panetto.
To make to rest in the refrigerator for a mezz'ora. To remove from the refrigerator, to make some little balls and to slightly crush her with a fork. To bake for 15 minutes around.