Dad takes banal entertainment to be of consuming interest (7)
I believe the answer is:
popcorn
'be of consuming interest' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'dad takes banal entertainment' is the wordplay.
'dad' becomes 'pop' (synonyms).
'takes' is a charade indicator (letters next to each other).
'banal entertainment' becomes 'corn' (I am not sure about this - if you are sure you should believe this answer much more).
'pop'+'corn'='POPCORN'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for popcorn that I've seen before include "Popular snack in the cinema" , "Heated maize kernel" , "making a meal of it?" , "Feature accompaniment" , "flicks food" .)