Constituent and I get dinner cooked (10)
I believe the answer is:
ingredient
'constituent' is the definition.
(I know that constituent can be written as ingredient)
'i get dinner cooked' is the wordplay.
'cooked' is an anagram indicator (letters cooked into a new form).
'get'+'dinner'='getdinner'
'getdinner' anagrammed gives 'ngredient'.
'i'+'ngredient'='INGREDIENT'
'and' acts as a link.
(Other definitions for ingredient that I've seen before include "Component of mixture" , "Constituent" , "Component element" , "One of the things" , "bit of meal?" .)