Where can I find Tri-grain toast in Steckborn?

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

Aadorf Allensbach Constance Diessenhofen Elgg Engen Frauenfeld Kreuzlingen Matzingen Müllheim Radolfzell am Bodensee Rielasingen-Worblingen Seuzach Singen (Hohentwiel) Stein am Rhein Sulgen Tägerwilen Weinfelden Winterthur Überlingen

You can also find this in Steckborn:

Everything From Milk Baking Mixtures Cream Stiffener Spreads Savory Food For Diabetics Menus With Meat Fruit Spritzers Filter Coffee Baguette Roll Salt Sticks