Hunter skinned then cooked antelope up for starter – it's greasy (7)
I believe the answer is:
unguent
'greasy' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for unguent that I've seen before include "Greasy ointment" , "application" , "An ointment or lubricant" , "Balm, ointment" , "Lotion" .)