Wish my talk could be improved by strong liquor! (4,6)

I believe the answer is:

malt whisky

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'improved by strong liquor' is the definition.
'malt whisky' can be an answer for 'liquor' (malt whisky is a kind of liquor). I'm not certain of the 'improved by strong' bit.

'wish my talk could be' is the wordplay.
'could be' indicates an anagram.
'wish'+'my'+'talk'='wishmytalk'
'wishmytalk' with letters rearranged gives 'MALT WHISKY'.

Can you help me to learn more?

(Other definitions for malt whisky that I've seen before include "nightcap" , "Distilled spirit" .)

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

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