Where can I find Mega burger bun in Irenental?

Mega burger bun can also be found in these cities:

Alland Brunn am Gebirge Freiburg im Breisgau Gablitz Guntramsdorf Hinterbrühl Klosterneuburg Korneuburg Mauerbach Mödling Perchtoldsdorf Pressbaum Sieghartskirchen Stockerau Stuttgart Tulln an der Donau Vienna Zwentendorf an der Donau

You can also find this in Irenental:

Vanilla Sugar Jelly Popsicle Meat Coffee Drinks Normal Rolls Acid Preserves Vegetable Oil Prosecco Bourbon Whiskey