Where can I find Jam in Werthenstein?

Jam can also be found in these cities:

Buchrain Ebikon Egolzwil Emmen Hitzkirch Horw Huttwil Kriens Lucerne Malters Oberkirch Rain Ruswil Sarnen Sempach Stans Sursee Urswil Wolhusen Zell

You can also find this in Werthenstein:

Milk Baking Ingredients Beer Vinegar Beef Spices Cocoa Normal Rolls Acid Preserves