Stoker eating last of flavoursome fish (5)
I believe the answer is:
bream
'fish' is the definition.
(type of fish)
'stoker eating last of flavoursome' is the wordplay.
'stoker' becomes 'bram' (I've seen this in another clue).
'eating' indicates putting letters inside.
'last of' indicates one should take the final letters.
The final letter of 'flavoursome' is 'e'.
'bram' placed around 'e' is 'BREAM'.
(Other definitions for bream that I've seen before include "Fish of the carp family" , "Amber (anag) - fish" , "Fish - British classical guitarist, b. 1933" , "Edible fish" , "Bar me from the freshwater fish" .)