Variety of rocket and nuts - convenience food? (8)

I believe the answer is:

vindaloo

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'food?' is the definition.
(I've seen this before)

'variety of rocket and nuts convenience' is the wordplay.
'variety of rocket' becomes 'vi' (I can't explain this - if you can you should believe this answer much more).
'nuts' indicates anagramming the letters (nuts can mean crazy).
'convenience' becomes 'loo'.
'and' is an anagram of 'nda'.
'vi'+'nda'+'loo'='VINDALOO'

Can you help me to learn more?

(Other definitions for vindaloo that I've seen before include "Very hot Indian curry" , "very spicy" , "Indian food" , "Highly-spiced Indian curry" , "As hot food" .)

I've seen this clue in The Daily Mail.

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