One in pursuit of spirit to follow beer, perhaps (6)
I believe the answer is:
chaser
'one in pursuit of spirit' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'follow beer perhaps' is the wordplay.
'follow' becomes 'chase' (synonyms).
'beer perhaps' becomes 'r' (I am not sure about this - if you are sure you should believe this answer much more).
'chase'+'r'='CHASER'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for chaser that I've seen before include "Beer after spirits e.g." , "Follow-up drink" , "Beer after whisky, say (or vice versa)" , "One hunting" , "engraver" .)