Where can I find Sauce powder in Mittelberg?

Sauce powder can also be found in these cities:

Andelsbuch Au Bizau Damüls Egg Hittisau Innerbraz Krumbach Lech Oberstdorf Riezlern Schnepfau Schröcken Stuttgart Warth

You can also find this in Mittelberg:

Baking Soda Rusk Food For Diabetics Menus With Meat Filter Coffee Cheese Roll Canned Fish Fat Spirits