Organised a way to drink whisky (4)
I believe the answer is:
I believe this is a double definition.
'organised' is the first definition.
'a way to drink whisky' is the second definition.
(drinking whisky neat is drinking it undiluted)
(Other definitions for neat that I've seen before include "Very good American", "lacking water", "compact", "Old cattle", "Orderly, uncluttered".)