Cold enclosure for birds missing last luxury food (6)
I believe the answer is:
caviar
'luxury food' is the definition.
'caviar' can be an answer for 'food' (caviar is a kind of food). I am not certain of the 'luxury' bit.
'cold enclosure for birds missing last' is the wordplay.
'cold' becomes 'C' (abbreviation, eg on taps).
'enclosure for birds' becomes 'aviary' (I've seen this before).
'missing last' means to remove the last letter.
'aviary' with its last letter taken off is 'aviar'.
'c'+'aviar'='CAVIAR'
Can you help me to learn more?
(Other definitions for caviar that I've seen before include "Sturgeon eggs" , "... prized delicacy" , "produce of Russia?" , "Fish roe" , "Sturgeon delicacy" .)