Sauce spoon (4)
I believe the answer is:
neck
I believe this clue is a double definition.
'sauce' is the first definition.
('neck' can mean rudeness e.g. 'he's got some neck')
'spoon' is the second definition.
(I've seen this before)
(Other definitions for neck that I've seen before include "One may get it in it!" , "and what is at the bottom of it" , "Adam's apple location" , "Isthmus; impudence (sl.)" , "A hard one shows some nerve" .)