Friend with limo adapted for biofuel (4,3)
I believe the answer is:
palm oil
'biofuel' is the definition.
I can't tell whether this definition defines the answer.
'friend with limo adapted' is the wordplay.
'friend' becomes 'pal' (pal can mean a friend).
'with' means one lot of letters goes inside another.
'adapted' indicates anagramming the letters.
'limo' anagrammed gives 'lmoi'.
'pal' going around 'lmoi' is 'PALM-OIL'.
'for' is the link.
Can you help me to learn more?
(Other definitions for palm oil that I've seen before include "Product of tropical tree" , "Fatty tree product" , "Vegetable fat" .)