She's had her first taste of independence and freedom, living the life with people her own age, eating and drinking whatever &!whenever she wants. Then home to a relatively boring existence with rules & being told what to eat etc. I was like your DD when I came home from uni, as were my own DC. What you describe is perfectly normal, if unacceptable and disappointing.
She doesn't like your bacon and pesto? Tell her to go to the shops and buy whichever one she wants, even if it's a long walk or a bus ride. But ask her to help with the next week's meal plan & shopping list.
Doesn't like her home town? Tell her she's free to go back to uni early.
She tuts and eye rolls? Ignore. And keep ignoring her until she starts a pleasant conversation.
She needs a lift - fine but she does a job for you first.
She's an adult now but even adults have to be respectful towards others, especially in their own home.
It's well known that children need rules, even unpopular ones, to feel secure and I don't think that is any different for young adults.
Try to find something nice you can do together, go for lunch, a coffee or a drink. When you have a lovely conversation, tell her how much you enjoyed it and how much you missed her.
If it's any consolation, she probably missed you terribly but is never going to admit it.
Bear with it, in my experience it gets better in subsequent holidays