Stopping gin getting mixed after whisky (9)

'stopping' is the definition.
The answer and definition can be both to do with social activities as well as being present participle verbs.
Maybe you can see an association between them that I can't see?

'gin getting mixed after whisky' is the wordplay.
I cannot really understand how this works, but
an anagram of 'gin' is 'ing' which is located in the answer.
'whisky' could be 'scotch' (Scotch whisky is an example) and 'scotch' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...

Can you help me to learn more?