Tbh chicken, fish, pork should also not count as burger if they want to actually preserve purity.

Personally I think the burger should refer to the shape of the sandwich, regardless of what you put inside it, and we should call the patty a patty, regardless of what it’s made of. This luckily is what we’re doing where I live, but if that means that restaurant-prepared veggie burger can’t be called a veggie burger, that’s bullshit. I thought it meant specifically the patties (which in American are called burgers and if anyone has authority on naming here it’s the Americans, as they’ve perfected the art of fa(s)t foods).