Small piece of cooked game is delicious (7)
I believe the answer is:
scrummy
'delicious' is the definition.
(I've seen this before)
'small piece of cooked game' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'piece of' suggests taking the first letters.
'game' becomes 'rummy' (rummy is a kind of game**).
The initial letter of 'cooked' is 'c'.
's'+'c'+'rummy'='SCRUMMY'
'is' is the link.
(Other definitions for scrummy that I've seen before include "Delightful" , "Attractive" , "Delicious (slang)" .)