Where can I find Filter coffee in Grenchen?

Filter coffee can also be found in these cities:

Biberist Biel Bienne Brugg Burgdorf Delémont Derendingen Gerlafingen Ipsach Kirchberg Langendorf Lyss Moutier Münchenbuchsee Nidau Solothurn Tavannes Utzenstorf Zuchwil

You can also find this in Grenchen:

Semolina Porridge Cake Vanilla Sugar Jelly Ice Cream Desserts Meat Products Lemonades Instant Coffee Pumpkin Seed Roll Canned Meat