Makes fresh bit of pure new sauce (6)
I believe the answer is:
renews
'makes fresh' is the definition.
(I've seen this in another clue)
'bit of pure new sauce' is the wordplay.
'bit of' indicates the answer is hidden within the clue.
'RENEWS' is hidden in the letters of 'pure new sauce'.
(Other definitions for renews that I've seen before include "Refreshes" , "Recommences" , "Establishes again" , "Makes born again" , "Makes whole" .)