Crossword Genius

Son having slight temperature avoids paella flavouring (7)

Ross

I believe the answer is:

saffron

'paella flavouring' is the definition.
(spice used for flavouring a paella)

I don't understand how the rest of the clue works.

(Other definitions for saffron that I've seen before include "Flavouring derived from a species of crocus" , "Spice from crocus" , "Type of crocus" , "Culinary spice" , "Orange-yellow colour" .)

I've seen this clue in The Times.
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