Mostly pleased with Cup a Soup or fruit puree (5,5)
I believe the answer is:
apple sauce
'fruit puree' is the definition.
(puree of apples)
'mostly pleased with cup a soup' is the wordplay.
'mostly' means to remove the last letter.
'with' means one lot of letters go next to another.
'soup' indicates anagramming the letters.
'pleased' with its final letter taken off is 'please'.
'cup'+'a'='cupa'
'please' put after 'cupa' is 'cupaplease'.
'cupaplease' with letters rearranged gives 'APPLE SAUCE'.
'or' is the link.
(Other definitions for apple sauce that I've seen before include "relish" , "dressing to accompany meat" , "It's often had with pork" , "It's eaten with pork" , "meat accompaniment" .)