Weird old men devour a European drink (8)
I believe the answer is:
lemonade
'drink' is the definition.
(lemonade is a kind of drink)
'weird old men devour a european' is the wordplay.
'weird' indicates an anagram.
'devour' indicates putting letters inside (inserted letters are swallowed or devoured).
'european' becomes 'E' (abbreviation e.g. EU).
'old'+'men'='oldmen'
'oldmen' is an anagram of 'lemond'.
'lemond' placed around 'a' is 'lemonad'.
'lemonad'+'e'='LEMONADE'
(Other definitions for lemonade that I've seen before include "it refreshes" , "Sweetened beverage of diluted juice" , "Do enamel this strange drink" , "Sweet beverage of diluted juice" , "something refreshing" .)