Charge adolescent producing mess (7)
I believe the answer is:
canteen
'mess' is the definition.
(both can mean a room for eating)
'charge adolescent' is the wordplay.
'charge' becomes 'can' (I can't explain this - if you can you should give a lot more credence to this answer).
'adolescent' becomes 'teen' (teenager).
'can'+'teen'='CANTEEN'
'producing' acts as a link.
Can you help me to learn more?
(Other definitions for canteen that I've seen before include "Workplace restaurant" , "water bottle?" , "Refectory" , "Cafe, flask and cutlery box" , "Staff eating area" .)