Quickly drinks new lager brand out of barrel (5)
I believe the answer is:
necks
'quickly drinks' is the definition.
'necks' can be an answer for 'drinks' (I've seen this before). I'm unsure of the 'quickly' bit.
'new lager brand out of barrel' is the wordplay.
I cannot really see how this works, but
'new' could be 'n' (common abbreviation eg NT for New Testament) and 'n' is found within the answer.
'brand' could be 'ck' (Calvin Klein) and 'ck' is present in the answer.
The remaining letters 'es' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for necks that I've seen before include "Smooches" , "They connect heads to bodies" , "behaves amorously" , "Kisses amorously" , "They connect head to body" .)