Where can I find Mega burger bun in Seelisberg?

Mega burger bun can also be found in these cities:

Altdorf Buchrain Buochs Ebikon Einsiedeln Engelberg Goldau Ibach SZ Ingenbohl Küssnacht Lucerne Rotkreuz ZG Stans Unterägeri

You can also find this in Seelisberg:

Baked Goods Yeast Fresh Pumpernickel Breakfast Cereals Olives Drinks Dry Herbs Spaetzle Snacks Horseradish