Discriminating introduction to alcoholic spirit (6)
I believe the answer is:
ageist
'discriminating introduction' is the definition.
The definition suggests a singular noun which matches the answer.
'alcoholic spirit' is the wordplay.
'alcoholic' becomes 'a' (this might be a standard abbreviation which I don't know about).
'spirit' becomes 'geist' (I've seen this before).
'a'+'geist'='AGEIST'
'to' is the link.
Can you help me to learn more?
(Other definitions for ageist that I've seen before include "against vets" , "making it hard for the elderly" , "Discriminating on the basis of years lived" , "discriminator of old" , "One who discriminates against on grounds of age" .)