Crossword Genius

Is adolescent able to find cafeteria? (7)

Ross

I believe the answer is:

canteen

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

'cafeteria?' is the definition.
(I know that cafeteria can be written as canteen)

'is adolescent able' is the wordplay.
I cannot quite understand how this works, but
'adolescent' could be 'teen' (teenager) and 'teen' is found in the answer.
'able' could be 'can' and 'can' is present in the answer.
No letters remain.
This explanation may well be incorrect...

'to find' is the link.

Can you help me to learn more?

(Other definitions for canteen that I've seen before include "Box containing cutlery" , "and where it could be used" , "Pub in Jo'burg" , "Workers' restaurant" , "Soldier's water-flask" .)

I've seen this clue in The Mirror.
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