Mangetout with this coating might steal a march on them (6)
I believe the answer is:
outwit
'coating might steal a march on them' is the definition.
I can't judge whether this definition defines the answer.
'mangetout with' is the wordplay.
'OUTWIT' is hidden within the letters.
But, I am not sure how the hidden word is indicated.
'this' acts as a link.
Can you help me to learn more?
(Other definitions for outwit that I've seen before include "Intellectually get the better of" , "Mentally get the better of" , "Outsmart" , "Get the better of by cunning" , "Hoodwink" .)