Not that I want to bash on this manga, they're supposed to be in a European style other world or at least town and they are able to find all those Japanese ingredients easily, even Chinese cabbage, tofu, mirin, they even have the locals eating with chopsticks. Next, they'll have soy sauce and adzuki beans. Oops, my bad I continued reading the chapter, and yeah soy sauce was in there too. It's entertaining but I don't know it does not feel like they went to another world