Where can I find Potato specialties in Straßenhaus?

Potato specialties can also be found in these cities:

Andernach Bad Honnef Dierdorf Dortmund Döttesfeld Hundsdorf Hünxe Koblenz Linz am Rhein Mülheim-Kärlich Neuwied Nickenich Oberhonnefeld-Gierend Peterslahr Plaidt Remagen Urbach Waldbreitbach Weißenthurm Wirges

You can also find this in Straßenhaus:

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