Entertain fellow with some beer (6)

I believe the answer is:

regale

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'entertain' is the definition.
(I've seen this before)

'fellow with some beer' is the wordplay.
'fellow' becomes 'reg' (I can't explain this - if you can you should believe this answer much more).
'with' says to put letters next to each other.
'some beer' becomes 'ale' (type of beer).
'reg'+'ale'='REGALE'

Can you help me to learn more?

(Other definitions for regale that I've seen before include "Shower" , "Amuse with stories" , "Entertain lavishly" , "Generously entertain (with)" , "Entertain, delight" .)

I've seen this clue in The Daily Express.

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