I think he tends to prefer light, fresh-tasting foods (like fresh fruit and seafood) and tends to dislike rich, heavy foods (particularly carb+sugar-heavy, like sweet potato and churros). partly I think this may be because eastern cuisine is likely to lean towards a more delicate palette (Faust and Heath also prefer lighter foods, and Heath's hated foods are almost exclusively heavy meat dishes, lol) (conversely west likely leans towards rich, heavy, decadent), but it's also probably partly because 1. lighter foods are generally easier to digest (being someone who may have a compromised digestive system from poor diet early on in life) 2. tasting fresher=tasting safer. canonically he likes the sourness of lemon because it makes him feel alive; he probably likes soda for the same reason. conversely although he likes sour tastes I figure he might not be good with fermented things or jerky (bc it isn't fresh-tasting/thus may feel closer to his experiences with food that has already gone bad)

I wrote this primarily referencing this guide again: https://docs.google.com/spreadsheets/d/159Iw7UWzMwWzyw_xuhFSJt8aI70mEB7IdBVyIuq4--o/edit?gid=1528682551#gid=1528682551

but that being said, it's worth noting that characters' food preferences are not written totally consistently in series with their in-game kitchen preferences. for example I wanted to think Shino doesn't like spicy things bc he's not good with the cinnamon candy in anni2 and I thought it would be cute, but he likes curry and chili con carne so he probably isn't that bad with spice :( and there was this login story from the Mitile and Mithra sonatine where Heathcliff and Arthur were excited for an all meat dishes spread https://x.com/sagesjournal/status/1791440072694218999 but as noted earlier, nearly all of Heath's hated kitchen dishes are heavy meat dishes DFJLKDJS (though even in the login story he is most excited for the chicken). Heathcliff also has a whole character episode dedicated to being excited about roasted sweet potatoes but in the kitchen he only actually likes them if they're bitter and is otherwise neutral on them... maybe it was just the novelty of eating something cooked outside... maybe open fire sweet potatoes are more bitter...? he also ends that episode saying he wants to show Shino but Shino hates sweet potato... pictures taken moments before disaster......... somehow I ended up talking about Heathcliff's food tastes. sorry. osana brain never turns off.