Hot paste in achar is savoury (7)

I believe the answer is:

harissa

'hot paste' is the definition.
(I've seen this before)

'in achar is savoury' is the wordplay.
'in' says the answer is hidden in the clue.
'HARISSA' can be found hidden inside 'achar is savoury'.

(Other definitions for harissa that I've seen before include "Spicy sauce" , "Hot paste used in North African cuisine -- ass hair (anag)" , "Hot North African sauce" .)

I've seen this clue in The Hindu.

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