Appropriate amount of salt? (5)
I believe the answer is:
pinch
I believe this clue is a double definition.
'appropriate' is the first definition.
(I've seen this before)
'amount of salt?' is the second definition.
(I've seen this before)
(Other definitions for pinch that I've seen before include "Steal (colloq.); one felt by the poor" , "Squeeze painfully" , "Grip tightly; steal (colloq.)" , "appropriate" , "Tweak" .)