Ace curried mixture in pastry combined with a fish dish (12)
I believe the answer is:
taramasalata
'fish dish' is the definition.
'taramasalata' can be an answer for 'dish' (I have seen 'Greek dish' mean 'taramasalata' so perhaps 'dish' could also mean 'taramasalata'). I am not sure about the 'fish' bit.
'ace curried mixture in pastry combined with a' is the wordplay.
'ace' becomes 'a' (abbreviation).
'curried mixture' becomes 'masala' (I can't explain this - if you can you should give a lot more credence to this answer).
'in' means one lot of letters goes inside another.
'pastry' becomes 'tart' (type of pastry).
'combined with' is a charade indicator (letters next to each other).
'a'+'masala'='amasala'
'amasala' put into 'tart' is 'taramasalat'.
'taramasalat'+'a'='TARAMASALATA'
Can you help me to learn more?
(Other definitions for taramasalata that I've seen before include "Pink fish roe paste" , "Greek fish pate or dip" , "Pink Greek food" , "Pinkish fish roe paste" , "spread" .)