Where can I find Oil in Laterns?

Oil can also be found in these cities:

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

You can also find this in Laterns:

Pastries Fruit Brandies Licorice Tri-Grain Toast Sugar Panettone Rice Pudding Spelt Bread Nut Nougat Cream Delicatessen