California roll ingredient (7)
I believe the answer is:
avocado
'california roll ingredient' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for avocado that I've seen before include "Savoury pear-shaped fruit" , "A posh tropical pear" , "Pulpy fruit" , "Dark green fruit like posh pear" , "Alligator pear" .)