Non-alcoholic form of the demon ale (8)
I believe the answer is:
lemonade
'non-alcoholic form' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'of the demon ale' is the wordplay.
'of' is an anagram indicator (the answer comes from or 'of' the letters).
'demon'+'ale'='demonale'
'demonale' is an anagram of 'LEMONADE'.
Can you help me to learn more?
(Other definitions for lemonade that I've seen before include "Flavoured mineral drink" , "Still or fizzy drink" , "Ale demon (anag)" , "Sweet beverage of diluted juice" , "Lead me on to the strange drink" .)