Where can I find Tri-grain toast in Zellberg?

Tri-grain toast can also be found in these cities:

Alpbach Finkenberg Fügen Gerlos Jenbach Königsleiten Mayrhofen Pill Praa Schlitters Schwaz Tux Uderns Umlberg Zell am Ziller

You can also find this in Zellberg:

Edible Curd Flaxseed Bread Fruit Bar Olives Drinks Spaetzle Dips And Sauces Muesli Sauces And Fix Products Mega Burger Bun