Where can I find Rye roll in Zwingen?

Rye roll can also be found in these cities:

Aesch Allschwil Arlesheim Balsthal Basel Binningen Birsfelden Breitenbach Bubendorf Delémont Dornach Ettingen Füllinsdorf Grenzach-Wyhlen Kanton Reinach Laufen Liestal Lörrach Moutier Muttenz Münchenstein Oensingen Pratteln Rheinfelden (Baden) Riehen Weil am Rhein

You can also find this in Zwingen:

Fruit Bar Pickled Vegetables Fresh Salt Schupfnudeln Whole Grain Rolls Mayonnaise Rice Pastries Gin