Like toffee? (5)
I believe the answer is:
chewy
'like toffee?' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for chewy that I've seen before include "With a texture like toffee" , "Soft and sticky (to eat)" , "Tough to masticate" , "Taking much mastication" , "Requiring mastication, like toffee say" .)