Where can I find Rye breads in Grenchen?

Rye breads 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:

Lump Sugar Fish Sticks Roll Cheesecake Help Sunflower Seed Bread Power Bar Salads Iced Tea Coffee Infant Food