Mohnzelten is the name of a sweet Austrian pastry that's a specialty of the Waldviertel region. It consists of potato dough that's filled with poppy seeds. The dough is made from a combination of boiled potatoes, flour, butter, eggs, cream, salt, and baking powder, while the filling consists of butter, poppy seeds, honey, sugar, cinnamon, rum, and grated lemon zest.