For once, it would be funny to see a MC hate soy sauce, rice and mayonnaise. But I also know that this is an impossibility because all Isekai Japanese people are physically dependent on those 3 things to the point where if there isn't any here, but maybe somewhere in the world, it becomes the driving plot point for the entire series. There are too many Isekai's whose plot is almost entirely "The quest for the a legendary grain of rice, and select condiments". Also, why is every single person somehow an expert at making these things? They can be the biggest NEET in the world, but they have a professional grade ability to manufacture perfect quality soy sauce, mayonnaise, etc without practically any kind of practice or recipe. At least this one uses a computer to make it.
I get "home foods" are nice to have and all, but are there no picky eaters, allergy restricted people, or people who just do not like to eat it in Japan? And does every person in these different worlds like literally every edible thing pushed in front of their face that is not necessarily "odd" (like bugs and such)? I know in these worlds it is more "eat what you got" than pick what you want, but it does not mean you automatically like it.