1) i love you???? 2) teo likes sour food, his favorite meal is beef and biscuit stew. he's really partial to stuff that's hearty, filling & comforting, and would be really disinterested in food that's specifically designed to be fancy (especially if the portions are small). he's not picky at all, but i think spicy food would literally kill him. sharp food though? bitter? he loves that stuff.
3) i feel like as with all things zenos wouldn't get a lot of pleasure out of food, so it would be a means to an end, but he's also been Raised on Specific Foods so i think he'd still be put off by things that don't mesh with the palate he's accustomed to. like you don't get raised as a prince, regardless of how poorly that went for you, and be perfectly accepting of a plate of macaroni and hotdogs for example (which i now want...). i feel like in the end it doesn't really matter (dot mp3) but he'd have a preference for richer foods, things that are just inherently more flavorful, & more complex. i also love the idea of this being turned into a challenge for him too re: things that are "difficult" to eat, ex. very spicy things or very alarming things (this is the man that would eat a scorpion, i am so sure of that). tl;dr a means to an end but with the addendum he'd still have certain tastes and aim for it to be interesting (i insist that steak and potatoes from In from the Cold had like a bearnaise sauce or something).