A flavouring of wine: tip of pear in blossom (8)
I believe the answer is:
rosemary
'a flavouring' is the definition.
(rosemary is a kind of flavouring)
'wine tip of pear in blossom' is the wordplay.
'wine' becomes 'rose' (rose wine is a kind of wine).
'tip of' suggests the final letters.
'in' means one lot of letters goes inside another.
'blossom' becomes 'may' (I've seen this before).
The final letter of 'pear' is 'r'.
'r' inserted within 'may' is 'mary'.
'rose'+'mary'='ROSEMARY'
'of' is the link.
(Other definitions for rosemary that I've seen before include ""That's for remembrance"" , "Herb - girl's name(s)" , "Girl's name -- a sorry me! (anag)" , "One or two girls" , "-'s Baby, Roman Polanski film" .)