Greek father in south India has Italian brandy (6)
I believe the answer is:
grappa
'italian brandy' is the definition.
(I've seen this before)
'greek father in south india' is the wordplay.
I cannot really see how this works, but
'greek' could be 'gr' (abbreviation for Greek) and 'gr' is present in the answer.
'father' could be 'pa' (pa can mean dad or father) and 'pa' is found within the answer.
This explanation may well be incorrect...
'has' acts as a link.
Can you help me to learn more?
(Other definitions for grappa that I've seen before include "Italian brandy distilled from grape lees" , "hard stuff" , "Brandy made from wine press residue" , "Spirit distilled from grapes" , "Italian drink" .)