gluten free bun at +1€; patty are likely to be prepared on the same stove as gluten containing buns, however, when speaking to staff, fries and buns will be prepared in separate kitchen areas (provided the place is not packed as they do not have manpower to do so when really busy; definitely always worth to ask as the chef tries to accommodate requirements the best he can). booking advisable. I came here by myself after checking the website and some reviews - having high expectations I was not disappointed!As I am allergic to wheat/gluten, dairy and walnuts I had (despite checking their menu online) some questions regarding their dishes. I had the chance to speak to the head chef, who was absolutely patient and considerate in regard to food allergies. All my requirements have been accommodated. Also, the waitress I spoke to first was absolutely patient and knowledgeable as well, she also gave accurate advise in regard to portion size and choice of dishes.The gluten free bun comes at +1€, it was an actual bun and tasted nicely. It was only slightly toasted, but a separate kitchen area was used (despite having only small space). Also, the fries were prepared in a separate fryer. I had the vegan burger without the walnut-date-mayo, which it absolutely did not need, as the coconut curry sauce was very rich in taste. The amaranth-buckwheat-patty was incredibly tasty, texture, as for most gf patties, is quite soft. To my taste, the fries were a bit too salty, but texture was immaculate. Fries need to be ordered in addition to the burger, the portion size of both is really filling, light eaters may do without the fries absolutely fine (as has the waitress said as well). The burger was definitely prepared freshly and one can watch the chefs in the halfway open-plan kitchen space, so no secrets there. One needs to judge for oneself if the risk of CC for the patty is something they take, if one is really sensitive it might not be advisable. If not, it is a nice place and good value for money, although prices are a bit higher.