Where can I find Toast bun in Sierning?

Toast bun can also be found in these cities:

Ansfelden Bad Hall Haidershofen Kleinraming Kremsmünster Leonstein Marchtrenk Molln Niederneukirchen Nußbach Ried im Traunkreis Sankt Florian Sankt Marien Steyr Weistrach Wolfern

You can also find this in Sierning:

Sausage Packed Rocket Vanilla Sugar Jelly Popsicle Meat Coffee Drinks Normal Rolls Acid Preserves Vegetable Oil