There are many variations of aalsuppe, some of them even contain eel Not as far-fetched as it sounds, the name, "Aalsuppe" Came from low german or "Plattdeutsch" "Allens rinkmmt or "Alles hineinkommt, " And meant everything in the kitchen should go in it, a leftovers soup, if you will. Now hamburg even has rules regarding the ingredients, specifically eel, in this soup, so that no visitor is disappointed by its absence. Hamburger aalsuppe is a sweet-sour soup with dried plums and apple pieces. Ham broth is made using a ham bone as well as fresh (sometimes smoked) eel. This recipe is adapted from one from 1879.