Dish of starch often breaking up (6,5)
I believe the answer is:
french toast
'dish' is the definition.
(French toast is an example)
'starch often breaking up' is the wordplay.
'breaking up' is an anagram indicator.
'starch'+'often'='starchoften'
'starchoften' anagrammed gives 'FRENCH TOAST'.
'of' is the link.
(Other definitions for french toast that I've seen before include "Bread fried with egg and milk" , "fried breakfast?" .)