Where can I find Three-grain bread in Opfertshofen?

Three-grain bread can also be found in these cities:

Beringen Blumberg Diessenhofen Donaueschingen Engen Kleinandelfingen Klettgau Neunkirch Rielasingen-Worblingen Schaffhausen Singen (Hohentwiel) Stein am Rhein Stühlingen Thayngen

You can also find this in Opfertshofen:

Edible Curd Grated Lemon Peel Flaxseed Bread Fruit Bar Pickled Vegetables Fresh Salt Schupfnudeln Whole Grain Rolls Mayonnaise