Irish town's company provides assistance to wine drinker? (9)

I believe the answer is:

corkscrew

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'assistance to wine drinker?' is the definition.
I can't tell whether this definition defines the answer.

'irish town's company' is the wordplay.
'irish town's' becomes 'corks' (I can't justify this - if you can you should believe this answer much more).
'company' becomes 'crew' (a group of people).
'corks'+'crew'='CORKSCREW'

'provides' acts as a link.

Can you help me to learn more?

(Other definitions for corkscrew that I've seen before include "Twist" , "Graves opened by this" , "Move in a spiral manner" , "This might help one who gets in the drink" , "convoluted course" .)

I've seen this clue in The Guardian.

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