Where can I find Mega burger bun in Buttisholz?

Mega burger bun can also be found in these cities:

Buchrain Egolzwil Emmen Hitzkirch Horw Huttwil Kriens Lucerne Malters Menziken Murgenthal Muri Oberkirch Rain Reiden Reinach Ruswil Sempach Stans Sursee Urswil Wolhusen Zell Zofingen

You can also find this in Buttisholz:

Everything From Milk Baking Mixtures Cream Stiffener Spreads Savory Food For Diabetics Menus With Meat Fruit Spritzers Filter Coffee Baguette Roll Salt Sticks