Drink in county house consumed by everyone (7)
I believe the answer is:
alcohol
'drink' is the definition.
(alcohol is a kind of drink)
'county house consumed by everyone' is the wordplay.
'county' becomes 'co'.
'house' becomes 'ho' (abbreviation for house).
'consumed by' indicates putting letters inside.
'everyone' becomes 'all' (I've seen this before).
'co'+'ho'='coho'
'coho' put into 'all' is 'ALCOHOL'.
'in' is the link.
(Other definitions for alcohol that I've seen before include "Intoxicating drink" , "Booze" , "Intoxicant in wine, etc." , "Wine, perhaps" , "Intoxicating liquid" .)