Prep time: 30 minutes Ingredience:  210g plain flour (1 2/3 cup) 140g butter (5/8 cups) 70g powdered sugar  (5/8 cups) 2 yolks 1 package of vanilla sugar  1ts lemon juice 2-3 tbsp cold water Aftre:  powdered sugar sweet jam How to:  Remove the butter from the fridge in advance, all ingredients must be at room temperature.  In the meanwhile, we put sugar, flour, butter, lemon juice, 2 yolks and then we mix all these ingredients together with hands.  The dough must be completely smooth, it shouldn’t be sticky (if it is, use little bit more flour).  Then we wrap the finished dough into a foil and let it rest in…