Where can I find Mega burger bun in Oberburg?

Mega burger bun can also be found in these cities:

Belp Bern Biberist Bremgarten bei Bern Burgdorf Derendingen Gerlafingen Grenchen Gümligen Hasle bei Burgdorf Herzogenbuchsee Hinterkappelen Huttwil Ittigen Kirchberg Konolfingen Köniz Langnau im Emmental Münchenbuchsee Münsingen Ostermundigen Utzenstorf Worb Zollikofen

You can also find this in Oberburg:

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