Where can I find Three-grain bread in Seewen SZ?

Three-grain bread can also be found in these cities:

Altdorf Baar Buochs Cham Einsiedeln Goldau Ibach SZ Ingenbohl Küssnacht Lachen Richterswil Rotkreuz ZG Steinhausen Unterägeri Zug

You can also find this in Seewen SZ:

Pudding Decorative Sugar Cereals Delicatessen Sausage Spice Pastes Mashed Potatoes Raisin Roll Canned Sausage