Wherein you can eat posh? (7)

I believe the answer is:

teashop

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'wherein you' is the definition.
I can't judge whether this definition defines the answer.

'can eat posh?' is the wordplay.
'can' indicates an anagram (I've seen 'canned' mean this (canned can mean drunk)).
'eat'+'posh'='eatposh'
'eatposh' is an anagram of 'TEASHOP'.

Can you help me to learn more?

(Other definitions for teashop that I've seen before include "Cafe (paradoxically?)" , "Place of refreshments" .)

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