Where can I find Filter coffee in Steckborn?

Filter coffee 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:

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