Reserve litre during finishing off beer production, dismissing no good source of artwork (10)
I believe the answer is:
botticelli
'source of artwork' is the definition.
The definition suggests a singular noun which matches the answer.
'reserve litre during finishing off beer production dismissing no good' is the wordplay.
I cannot really see how this works, but
'reserve' could be 'ice' (both can mean aloofness) and 'ice' is found in the answer.
'litre' could be 'l' (abbreviation) and 'l' is located in the answer.
'no' could be 'o' (O resembles 0) and 'o' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for botticelli that I've seen before include "who painted?" , "Famous Italian" , "Florentine C fifteen-sixteen artist (Primavera)" , "Italian painter, 1445-1510" , "Italian painter of The Birth of Venus, d. 1510" .)