Rather unusual oldish companies around University getting answer (1,6,5)

I believe the answer is:

i should cocoa

I'm a little stuck... Click here to teach me more about this clue!

'answer' is the definition.

'rather unusual oldish companies around university' is the wordplay.
I cannot really understand how this works, but
'companies' could be 'coco' (co for company, twice) and 'coco' is present in the answer.
'around' could be 'o' (I've seen this in other clues) and 'o' is found within the answer.
'university' could be 'u' (abbreviation for university) and 'u' is found within the answer.
This explanation may well be incorrect...

'getting' acts as a link.

Can you help me to learn more?

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.