A pork pie in the drink? (8)

I believe the answer is:

absinthe

I'm a little stuck... Click here to teach me more about this clue!

'drink?' is the definition.
(absinthe is a kind of drink)

'a pork pie in the' is the wordplay.
'a pork pie' becomes 'abs' (I can't justify this - if you can you should give a lot more credence to this answer).
'abs'+'in'+'the'='ABSINTHE'

Can you help me to learn more?

(Other definitions for absinthe that I've seen before include "alcohol" , "Liqueur - the basin (anag)" , "Aniseed flavoured liqueur" , "Green aniseed liqueur" , "Strong green liqueur, lethal when made with wormwood" .)

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

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