Where can I find Tri-grain toast in Bischofszell?

Tri-grain toast can also be found in these cities:

Abtwil SG Amriswil Appenzell Arbon Bronschhofen Bütschwil Constance Degersheim Flawil Friedrichshafen Goldach Gossau Herisau Immenstaad am Bodensee Kirchberg Kreuzlingen Müllheim Münchwilen Romanshorn Rorschach Sirnach St. Gallen Sulgen Teufen Tägerwilen Uzwil Weinfelden Wil Wittenbach Zuzwil

You can also find this in Bischofszell:

Delicatessen Sauces Raisin Slices Tequila Tea Toast Bun Baking Accessories Fish Croissants Flour Wheat Breads