Gyros Vegan (Γύρος Vegan) is the plant-based reading of the turning-spit sandwich, a modern build that swaps the meat cone for seitan or mushrooms while keeping the rest of the Greek assembly intact. The angle worth understanding is that the whole sandwich was already most of the way to vegan: the pita, tomato, onion, and fries carry no animal product, so the real work is two substitutions, the protein and the tzatziki, and the success of the version turns almost entirely on how well those two are handled rather than on any reinvention of the format.
The build follows the standard sequence with the substitutions slotted in. The seitan version is sliced and seasoned to mimic the shaved-cone texture and is seared hard so its edges crisp the way the outer layer of a real cone does; a soft, pale, unseared seitan is the most common failure, because without that crisped edge the sandwich loses the hot-crisp-against-cool-sauce contrast that defines a gyros. The mushroom version, often oyster or king oyster torn or sliced, is cooked down and browned aggressively so it renders and concentrates rather than steaming limp and watery. The pita is brushed with oil and griddled until soft and pliable with a few blistered spots, exactly as in the meat build. Then it is assembled hot and fast: the seitan or mushroom, tomato, raw onion, a dairy-free tzatziki usually built on a soy or cashew base, and fries rolled tight in paper. The vegan tzatziki is the other make-or-break: it has to stay thick and garlicky and not break or thin out, because a watery plant yogurt soaks the bread to mush just as fast as the dairy kind. Done right the result is a sandwich that reads the same way the original does, hot savory protein cut by cool garlic sauce and bright tomato.
It shifts by which protein the shop runs and how far it pushes the imitation. The seitan build aims closest to the meat texture; the mushroom build leans into its own savory character rather than pretending. Other modern plant-based Greek sandwich riffs are their own preparations and deserve their own article rather than being crowded in here. The constant is the same as the meat version: crisp the protein, keep the pita soft, build it hot, and keep the sauce thick enough to cut without drowning the bread.