Remove the tops of the strawberries, put them in a vacuum bag with the strawberry liqueur and put the bag in a sous-vide on a medium setting.
Melt the butter in a pan.
Grind the biscuits in a blender until fine and add to the melted butter and sugar to form a dough.
Roll out the mixture between two sheets of grease-proof paper to a thickness of 0.5 cm, leave to rest in the refrigerator for an hour and then cut out circles using a round cutter. Cover and store in the refrigerator.
Beat the tiramisù in a planet mixer until it has the consistency of yoghurt and add the pistachio compound.
Transfer the pistachio crème to a piping bag with a smooth nozzle and store in the refrigerator.
Finely grind the pink peppercorns and mix with the balsamic vinegar and icing sugar.