Sat curd to be blended for sauce (7)
I believe the answer is:
custard
'sauce' is the definition.
(I've seen this before)
'sat curd to be blended' is the wordplay.
'to be blended' indicates an anagram.
'sat'+'curd'='satcurd'
'satcurd' is an anagram of 'CUSTARD'.
'for' is the link.
(Other definitions for custard that I've seen before include "Dessert sauce" , "Pudding accompaniment" , "Type of apple" , "Yellow sauce" , "-- Pie; -- apple" .)