Love tuna cooked and filled with very little pastry (3-2-4)
I believe the answer is:
vol-au-vent
'pastry' is the definition.
(vol-au-vent is a kind of pastry)
'love tuna cooked and filled with very little' is the wordplay.
'cooked' is an anagram indicator (letters cooked into a new form).
'and' says to put letters next to each other.
'filled with very little' becomes 'v' (I am not sure about this - if you are sure you should believe this answer much more).
'love'+'tuna'='lovetuna'
'lovetuna' anagrammed gives 'olauvent'.
'olauvent' after 'v' is 'VOL-AU-VENT'.
Can you help me to learn more?
(Other definitions for vol-au-vent that I've seen before include "Light, filled pastry shell" , "Small puff pastry case with savoury filling" , "Puff-pastry savoury" , "Small puff pastry with fish or meat" .)