Where can I find Sweet potatoes in Laterns?

Sweet potatoes can also be found in these cities:

Altach Andelsbuch Bizau Bludenz Brand bei Bludenz Damüls Dornbirn Egg Feldkirch Göfis Götzis Hohenems Innerbraz Koblach Lustenau Mellau Mäder Nenzing Nüziders Schlins Schnepfau Schnifis Schwarzenberg Silbertal Sulz Thüringen Vandans Weiler Übersaxen

You can also find this in Laterns:

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