The Linzer Torte is said to be the oldest cake in the world and Linzer Torte is often made like small tarts or cookies in North American bakeries.
Linzer Torte is a very short, crumbly pastry made of flour, unsalted butter, egg yolks, lemon zest, cinnamon and lemon juice, and ground nuts, usually hazelnuts, but even walnuts or almonds are used, covered with a filling of redcurrant jam or, alternatively, plum butter, thick raspberry,[2] or apricot jam. It is covered by a lattice of dough strips. The dough is rolled out in very thin strips of pastry and arranged to form a criss-cross design on top of the preserves. The pastry is brushed with lightly beaten egg whites, baked, and sometimes decorated with sliced almonds.