Where can I find Sweet potatoes in Mittelberg?

Sweet potatoes 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:

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