Mos burger have a dedicated Low allergy menu! From this allergy friendly menu I ordered the pork burger. It was delicious and wrapped in packaging labelled as gluten free. It was a tiny size (slider sized) and ketchup was on the side. As an adult I could have eaten two or three; but it was cheap, only 350 yen ($3.50 Australian dollars). The other options on the allergy friendly menu were a hot dog and salad.
— Very
— Separate gluten-free menu
— Some
— Excellent