Harmonious relationship, having hit on kind of wine (7)
I believe the answer is:
rapport
'harmonious relationship' is the definition.
(I've seen this before)
'hit on kind of wine' is the wordplay.
'hit' becomes 'rap' (I've seen this in other clues**).
'on' means one lot of letters go next to another.
'kind of wine' becomes 'port'.
'rap'+'port'='RAPPORT'
'having' is the link.
(Other definitions for rapport that I've seen before include "Empathy" , "Relation, connection" , "communion" , "Harmonious and understanding relationship between people" , "Emotional bond" .)