Dutch artist, informally at home, about to pour out drinks (7)
I believe the answer is:
vincent
'dutch artist informally' is the definition.
I can't tell whether this defines the answer.
'at home about to pour out drinks' is the wordplay.
'at home' becomes 'in' ('I'm in' can mean 'I'm at home').
'about' becomes 'c' (abbreviation for circa).
'to pour out' becomes 'vent' (I can't justify this - if you can you should give a lot more credence to this answer).
'drinks' is an insertion indicator (inserted letters are consumed or drunk).
'in'+'c'='inc'
'inc' inserted within 'vent' is 'VINCENT'.
Can you help me to learn more?
(Other definitions for vincent that I've seen before include "Van Gogh's first name" , "See 21 Across" , "man" , "Fellow" , "boy" .)