Where can I find Power bar in Hürtgenwald?

Power bar can also be found in these cities:

Aachen Aken Alsdorf Düren Eschweiler Kreuzau Langerwehe Mechernich Monschau Nideggen Niederzier Nörvenich Roetgen Simmerath Stolberg Vettweiß Zülpich

You can also find this in Hürtgenwald:

Pudding Decorative Sugar Three-Grain Bread Cereals Delicatessen Sausage Spice Pastes Mashed Potatoes Raisin Roll Canned Sausage