Everyone devours salmon and booze (7)
I believe the answer is:
alcohol
'booze' is the definition.
('alcohol' can be a synonym of 'booze')
'everyone devours salmon' is the wordplay.
'everyone' becomes 'all' (I've seen this before).
'devours' means one lot of letters goes inside another (I've seen this in other clues).
'salmon' becomes 'coho' (type of salmon).
'all' placed around 'coho' is 'ALCOHOL'.
'and' is the link.
(Other definitions for alcohol that I've seen before include "Intoxicating element of liquor" , "Wine, perhaps" , "drinks" , "Intoxicant in wine, etc." , "Intoxicating liquour" .)