These small shortbread biscuits, delicately flavoured with lemon and topped with jam, melt in the mouth and seduce with their refined appearance. They are cousins of the famous Linz tart, an Austrian speciality dating back to the 17th century. Unlike the tart, these biscuits are presented as a sandwich: two discs of pastry, the top one pierced with three small holes, reveal the fruity filling. Delicious at Christmas, but also perfect for Easter, they keep well for several weeks in an airtight tin... as long as they are not uncovered before then!