Whisky, say, I found during excursions to the west (6)
I believe the answer is:
spirit
'whisky' is the definition.
(whisky is an alcoholic spirit)
'i found during excursions to the west' is the wordplay.
'found during' means one lot of letters goes inside another.
'excursions' becomes 'trips' (I've seen this before).
'to the west' says the letters should be written backwards (letters written right to left or 'east to west').
'i' placed inside 'trips' is 'tirips'.
'tirips' written backwards gives 'SPIRIT'.
'say' is the link.
(Other definitions for spirit that I've seen before include "Incorporeal supernatural being" , "character like Ariel" , "Life force" , "Spectre - alcohol" , "Jinn" .)