Where can I find Yeast fresh in Rüthi?

Yeast fresh can also be found in these cities:

Abtwil SG Altstätten Appenzell Au Buchs Diepoldsau Heiden Herisau Oberriet Rheineck Sankt Margrethen St. Gallen Teufen Walenstadt Widnau Wittenbach

You can also find this in Rüthi:

Edible Curd Grated Lemon Peel Flaxseed Bread Fruit Bar Pickled Vegetables Fresh Salt Schupfnudeln Whole Grain Rolls Mayonnaise