It is coated in oils to make appetisers (8)
I believe the answer is:
starters
'appetisers' is the definition.
(I've seen this before)
'it is coated in oils to make' is the wordplay.
'it is coated in oils' becomes 'ers' (I am not sure about this - if you are sure you should believe this answer much more).
'to' means one lot of letters go next to another (I've seen this in other clues).
'make' becomes 'start' (starting is a kind of making).
'ers' put after 'start' is 'STARTERS'.
Can you help me to learn more?
(Other definitions for starters that I've seen before include "Prawn cocktails" , "Novices" , "Appetisers" , "Bruschetta or soup, perhaps" , "Arts rest for beginners" .)