Starter of idli with any other piece of meat served up in Indian dish (7)
I believe the answer is:
biryani
'indian dish' is the definition.
(I've seen this before)
'starter of idli with any other piece of meat served up' is the wordplay.
'starter of' says to take the initial letters.
'with any other piece of' becomes 'nay' (I am not sure about this - if you are sure you should believe this answer much more).
'meat' becomes 'rib' (rib is a kind of meat).
'served up' is a reversal indicator (in a down clue, going upwards).
The initial letter of 'idli' is 'i'.
'i'+'nay'+'rib'='inayrib'
'inayrib' reversed gives 'BIRYANI'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for biryani that I've seen before include "Spicy dish" , "Indian dish; airy bin (anag.)" , "Dish from India" .)