Crossword Genius

Terrific tuna cooked by one of the family (5-4)

Ross

I believe the answer is:

great-aunt

I'm a little stuck... Click here to teach me more about this clue!

'one of the family' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps there's a link between them I don't understand?

'terrific tuna cooked by' is the wordplay.
'terrific' becomes 'great' (I've seen this before).
'cooked' is an anagram indicator (letters cooked into a new form).
'by' means one lot of letters go next to another.
'tuna' with letters rearranged gives 'aunt'.
'great'+'aunt'='GREAT-AUNT'

Can you help me to learn more?

(Another definition for great-aunt that I've seen is " Tag nature (anag) - relative".)

I've seen this clue in the Evening Standard.
Want a hint initially instead of a full solution? Install my app