Man bottling wine very early in the morning (7)
I believe the answer is:
predawn
'very early in the morning' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'man bottling wine' is the wordplay.
'man' becomes 'pawn' (pawn is a kind of man**).
'bottling' is an insertion indicator (bottling is a kind of containing).
'wine' becomes 'red' (red wine is a kind of wine).
'pawn' enclosing 'red' is 'PREDAWN'.
Can you help me to learn more?
(Other definitions for predawn that I've seen before include "Before first light" , "when the night is very far spent" , "Before the sun begins to rise" .)