Tea for single companion (9)

I believe the answer is:

chaperone

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'companion' is the definition.
(I've seen this before)

'tea for single' is the wordplay.
'tea' becomes 'cha' (cha is a type of tea).
'for single' becomes 'perone' (I can't justify this - if you can you should give a lot more credence to this answer).
'cha'+'perone'='CHAPERONE'

Can you help me to learn more?

(Other definitions for chaperone that I've seen before include "One overseeing" , "Young lady's protector" , "Companion" , "attendant" , "child-minder?" .)

I've seen this clue in the Sydney Morning Herald.

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