Where can I find Sauce powder in Zellberg?

Sauce powder 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:

Milk Beer Jam Balsamic Vinegar Pork Potato Products Sesame Roll Mayonnaise And More Pudding Powder Soy Products