Food for thought

Had a conversation with a friend on Sun and it triggered these highly intelligent yet confusing questions in my head. Tell me the dislike or like of certain food, is it a physical or a psychological thing?

Here was my conversation with my friend?

Me : You want to try my tu tu kueh?

Friend : No, i cannot eat coconut. Coconut and me dun go well together

Me : Ok, then do you eat chicken curry, also got coconut..

Friend : That one ok, only CERTain food with coconut will come out brown and messy really fast aft consumption.

Sigh, so was my friend allegic to coconut a not?

Then again, i thought abt myself and all my funny eating likes and dislikes.

I like strawberry but not the strawberry flavor
I like fishballs but not Yu Beng
I like to eat meat but detest meat balls

And the list goes on..... So is this simply a psychological thing that we subject our body through? hmmm

Sending the questions into the cosmic world, maybe one day i will get my answer.....