Where can I find Lump sugar in Oberarth?

Lump sugar can also be found in these cities:

Altdorf Baar Buchrain Buochs Cham Ebikon Einsiedeln Emmen Goldau Horw Ibach SZ Ingenbohl Kriens Küssnacht Lucerne Richterswil Rotkreuz ZG Stans Steinhausen Unterägeri Urswil Wädenswil Zug

You can also find this in Oberarth:

Butter Bread Cornstarch Spread Sweet Food For A Low Cholesterol Diet Pasta Dishes Fruit Juices Instant Cappucino Breakfast Croissants Canned Food