Where can I find Jam in Mauensee?

Jam can also be found in these cities:

Egolzwil Emmen Fahrwangen Hitzkirch Horw Huttwil Kriens Lucerne Malters Menziken Murgenthal Oberkirch Oftringen Olten Rain Reiden Reinach Rothrist Ruswil Schöftland Sempach Sursee Urswil Wolhusen Zell Zofingen

You can also find this in Mauensee:

Cookies Buttered Toast Sausages Edible Curd Grated Lemon Peel Flaxseed Bread Fruit Bar Pickled Vegetables Fresh Salt