Patty is enthralled by rare fish (7)
I believe the answer is:
rissole
'patty' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'is enthralled by rare fish' is the wordplay.
'enthralled by' means one lot of letters goes inside another ('enthral' can mean 'capture').
'rare' becomes 'r' (listed by Oxford Dictionary of Abbreviations).
'fish' becomes 'sole' (sole is a kind of fish).
'r'+'sole'='rsole'
'is' put inside 'rsole' is 'RISSOLE'.
Can you help me to learn more?
(Other definitions for rissole that I've seen before include "Sil rose for the meatball" , "faggot" , "Meat product" , "Fried ball of minced food" , "Spiced meat coated in breadcrumbs and fried" .)