Where can I find Mega burger bun in Root?

Mega burger bun can also be found in these cities:

Affoltern am Albis Baar Buchrain Buochs Cham Ebikon Emmen Goldau Hitzkirch Horgen Horw Ingenbohl Kriens Küssnacht Lucerne Malters Menziken Muri Oberkirch Rain Reinach Rotkreuz ZG Ruswil Sempach Stans Steinhausen Unterägeri Urswil Zug

You can also find this in Root:

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