Entertains with lager, perhaps, at some times (7)
I believe the answer is:
regales
'some times' is the definition.
Although both the answer and definition are verbs in their -s form, I don't see how they can define each other.
'entertains with lager perhaps' is the wordplay.
'entertains' becomes 'es' (I am not sure about this - if you are sure you should believe this answer much more).
'with' is a charade indicator (letters next to each other).
'perhaps' indicates anagramming the letters.
'lager' anagrammed gives 'regal'.
'es' put after 'regal' is 'REGALES'.
'at' is the link.
Can you help me to learn more?
(Another definition for regales that I've seen is " Treats".)