How dumplings saved a German town (and how they are made)

Old bread rolls, egg, milk, parsley - these are the basic ingredients for dumplings, also known as "Knödel". Also popular in Austria, South Tyrol, and the Czech Republic - in southern Germany they can be either a main course or a side dish, savory or sweet. In Deggendorf, in Lower Bavaria, they are even more than that: legend has it that the dumplings saved the town from an enemy siege.