Bitter, seeing inner workings of talent (3)
I believe the answer is:
ale
'bitter seeing inner workings' is the definition.
'ale' can be an answer for 'bitter' (type of beer or bitter). I'm unsure of the 'seeing inner workings' bit.
'of talent' is the wordplay.
'of' says the answer is hidden in the clue.
'ALE' can be found hidden inside 'talent'.
Can you help me to learn more?
(Other definitions for ale that I've seen before include "brew" , "Sold in 23" , "Beer procured in sales" , "One beer" , "Similar to beer" .)