i eat stuff like fermented rye/oat/buckwheat waffles, salmon, sausages, potatoes, onion, and bananas. i also make my own nattou (fermented beans), kimchi (saurkraut), kombucha (fermented tea), and drink green tea and flavored "bubble water" (mineral water).
my wife and i quit eating processed foods 3 years ago and now we literally can't eat them without throwing up or getting insomnia and nightmares etc, so we can't eat table sugar, white flour, cooking oil etc or anything that contains them, such as ramen, (most types of) soy sauce, sushi rice. from all that we've read online, it's still a lot easier to find pre-made or restaurant stuff in japan on this kind of diet than in sweden or the USA.

whole-grain rice, fermented rye/oat flour, kimchi.

fermented waffle, raspberries, coconut cream

kombucha (green tea and honey, or nowadays I make it with dates instead of honey since it's cheaper and works better)