Source of flavour in wines - good effect of the sun? (7)
I believe the answer is:
tanning
'wines good effect of the sun?' is the definition.
I can't judge whether this defines the answer.
'source of flavour in' is the wordplay.
'source of' becomes 'nin' (I can't explain this - if you can you should believe this answer much more).
'flavour' becomes 'tang' (synonyms).
'in' is an insertion indicator.
'nin' inserted into 'tang' is 'TANNING'.
Can you help me to learn more?
(Other definitions for tanning that I've seen before include "Browning?" , "Punishing" , "effect of sun's rays?" , "hiding" , "Knocking" .)