Linzer Torte, a speciality of the Austrian city of Linz, is one of the oldest known cake recipes in Europe. The oldest manuscript version of this recipe dates back to 1653 and was found in the magnificent Benedictine abbey of Admont in Austria. Traditionally made with flour, walnuts or hazelnuts, powdered black pudding, eggs, spices and a squeeze of lemon, this tart is filled with redcurrant jam and covered with a typical pastry bag decoration. Unlike many other cakes, Linzer Torte gains in flavour if it is left to rest for a few days before serving. It can easily be stored for up to two weeks, well wrapped, in a cool place (but not in the fridge).