Where can I find Rusk in Grünkraut?

Rusk can also be found in these cities:

Altshausen Bad Waldsee Bad Wurzach Baienfurt Friedrichshafen Heimenkirch Hohenweiler Kißlegg Langenargen Lindenberg im Allgäu Markdorf Meckenbeuren Oberteuringen Ravensburg Tettnang Wangen im Allgäu

You can also find this in Grünkraut:

Still Water Coffee Pods Poppy Seed Roll Canned Fruit Olive Oil Champagne Aperitif Dry Soups Wild Cold Cuts