Settle in spot that lacks special ingredient (5)
I believe the answer is:
point
'ingredient' is the definition.
(point is a kind of ingredient)
'settle in spot that lacks special' is the wordplay.
'settle' indicates an anagram (I've seen 'settling' mean this (settle can mean to solve or sort out)).
'that lacks' is a deletion indicator.
'special' becomes 'S' (common abbreviation as in Special Air Service).
'in'+'spot'='inspot'
'inspot' with 's' taken out is 'inpot'.
'inpot' anagrammed gives 'POINT'.
(Other definitions for point that I've seen before include "Land jutting into sea" , "Dot, punctuation mark" , "Repair brickwork" , "Geometric element that has position but no extension" , "Crux" .)