Tagine must be cooked for this purpose (6)
I believe the answer is:
eating
'this purpose' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'tagine must be cooked' is the wordplay.
'must be cooked' indicates anagramming the letters (letters processed or cooked into a new form).
'tagine' is an anagram of 'EATING'.
'for' is the link.
Can you help me to learn more?
(Other definitions for eating that I've seen before include "Taking in solid food" , "Consuming food" , "Having supper?" , "Ingestion" , "Out to dinner?" .)