Where can I find Three-grain bread in Buchs?

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

Altach Appenzell Feldkirch Göfis Götzis Koblach Laterns Mels Nenzing Oberriet Schlins Schnifis Sulz Walenstadt Weiler Übersaxen

You can also find this in Buchs:

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