Where can I find Hamburger buns in Fernwald?

Hamburger buns can also be found in these cities:

Bad Nauheim Butzbach Giessen Langgöns Lich Lollar Mücke Münzenberg Nidda Pohlheim Reiskirchen Rockenberg Wettenberg Wetzlar

You can also find this in Fernwald:

Cocktail Tomatoes Mushrooms Starting Milk Pre Speculoos Baguette Yeast Dry Rye Breads Granola Bar Pies Cola