Vegetable that's a bit crisp in a chutney (7)
I believe the answer is:
spinach
'vegetable' is the definition.
(spinach is a kind of vegetable)
'a bit crisp in a chutney' is the wordplay.
'a bit' says the answer is hidden in the clue (the answer is formed by a bit of the clue).
'SPINACH' is hidden within 'crisp in a chutney'.
'that's' is the link.
(Other definitions for spinach that I've seen before include "Popeye the Sailor's favourite vegetable" , "Dark green vegetable" , "Blackboard stand" , "Leaf vegetable" , "Vegetable plant" .)