Dish is no meal for cooking (8)
I believe the answer is:
semolina
'cooking' is the definition.
The answer and definition 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?
'dish is no meal' is the wordplay.
'dish' is an anagram indicator (dish can informally mean to destroy).
'is'+'no'+'meal'='isnomeal'
'isnomeal' anagrammed gives 'SEMOLINA'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for semolina that I've seen before include "dessert" , "Wheat used for milk puddings" , "Wheat product used in pasta" , "One's mail (anag.)" , "As oilmen eat this pudding" .)