If you had to eat only one type of food for the rest of your life, which would you pick?
Like a random rural Chinese person is eating rice+veg, rice+veg, rice+veg+meat, rice+veg, day after day, week after week, forever.
Aside from foreign options, I guess you could pinpoint seafood (or regional seafood), 'southern food'?  Is that too vague?  BBQ?