Crossword Genius

Popular drink I had lacking flavour (7)

Ross

I believe the answer is:

insipid

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

'popular drink i had' is the wordplay.
'popular' becomes 'in' ('in' can mean trendy).
'drink' becomes 'sip' (sipping is a kind of drinking).
'i had' becomes 'I'd' (common contraction).
'in'+'sip'+'id'='INSIPID'

(Other definitions for insipid that I've seen before include "Lacking taste or flavour" , "Colourless" , "Wishy-washy" , "Lacking flavour or banal" , "Bland, flavourless" .)

I've seen this clue in The Guardian.
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