Someone who flogs whiskey needing cooler (7)

I believe the answer is:

whipper

'someone who flogs' is the definition.
(I know that whippers flog)

'whiskey needing cooler' is the wordplay.
'whiskey' becomes 'W' (phonetic alphabet: alpha, bravo, charlie etc.).
'needing' means one lot of letters go next to another.
'cooler' becomes 'hipper' (hip can mean cool or trendy).
'w'+'hipper'='WHIPPER'

I've seen this clue in The Times.

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