Dreams of Delia's cooking (6)
I believe the answer is:
ideals
'dreams' is the definition.
(ideal can mean a dream or aspiration)
'delia's cooking' is the wordplay.
'cooking' indicates anagramming the letters (cook can mean to falsify or distort).
'delias' anagrammed gives 'IDEALS'.
'of' is the link.
(Other definitions for ideals that I've seen before include "Dreams" , "Morals" , "Standards of excellence" , "Models of perfection" , "High aspirations for ladies" .)