Where can I find Mega burger bun in Sempach?

Mega burger bun can also be found in these cities:

Affoltern am Albis Buchrain Buochs Cham Ebikon Egolzwil Emmen Fahrwangen Hitzkirch Horw Kriens Küssnacht Lucerne Malters Menziken Muri Oberkirch Rain Reiden Reinach Rotkreuz ZG Ruswil Schöftland Stans Sursee Urswil Wolhusen Zofingen

You can also find this in Sempach:

Edible Curd Grated Lemon Peel Flaxseed Bread Fruit Bar Pickled Vegetables Fresh Salt Schupfnudeln Whole Grain Rolls Mayonnaise