Fit to serve up in Kashmir Tandoori (4)
I believe the answer is:
Here is my best explanation:
'fit' is the definition.
('trim' can be a synonym of 'fit')
'serve up in kashmir tandoori' is the subsidiary indication.
'serve up' shows that the letters should be reversed in order.
'in' indicates the answer is hidden within the clue.
'mirt' is hidden in the letters of 'kashmir tandoori'.
'mirt' back-to-front is 'trim'.
'to' is the link.
(Other definitions for trim that I've seen before include "Tidy - clip", "Make neat and smooth by cutting, say hair", "Neat - prune", "Cut away; decorate", "Additional decoration, in good order", "Well-kept - tidy", "(Make) neat and tidy", "Cut, prune; decorate", "Decorate; cut off" and "Pare; an ornament".)