After wine, friend makes a bit of a bloomer (7)
I believe the answer is:
rosebud
'bloomer' is the definition.
(I've seen this before)
'after wine friend' is the wordplay.
'after' means one lot of letters go next to another.
'wine' becomes 'rose' (rose is a kind of wine).
'friend' becomes 'bud' (shortly for buddy).
'rose' next to 'bud' is 'ROSEBUD'.
'makes a bit of a' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for rosebud that I've seen before include "Immature rambler" , "Unopened flower - pretty young woman" , "J. Foster Kane's last word" , "Citizen Kane's sleigh" , "Young flower (to be gathered?)" .)