Delicious food not started — revolting excessive colouring (7)

I believe the answer is:

annatto

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'colouring' is the definition.
Both the definition and answer are singular nouns.
Maybe they are linked in a way I don't understand?

'delicious food not started revolting excessive' is the wordplay.
'delicious food' becomes 'manna' (I've seen this before).
'not started' means to remove the first letter.
'revolting' shows that the letters should be reversed in order.
'excessive' becomes 'ott' (short for 'over the top').
'ott' backwards is 'tto'.
'manna' with its first letter taken away is 'anna'.
'anna'+'tto'='ANNATTO'

Can you help me to learn more?

(Other definitions for annatto that I've seen before include "food colouring" , "tree" , "Orange colouring" , "Orange-red dye" , "Food colourant" .)

I've seen this clue in The Times.

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