Curl lip and sneer at this beer (8)
I believe the answer is:
pilsener
'this beer' is the definition.
(pilsener is a kind of beer)
'curl lip and sneer' is the wordplay.
'curl' indicates anagramming the letters (I've seen 'curling' mean this (letters curl and twist out of order)).
'and' says to put letters next to each other.
'lip' after 'sneer' is 'sneerlip'.
'sneerlip' is an anagram of 'PILSENER'.
'at' is the link.
(Other definitions for pilsener that I've seen before include "Beer" , "Lager named after the town of its origin now in the Czech Republic" , "Kind of lager" .)