Greasy stuff in meat recipes sadly lacking energy (10)
I believe the answer is:
spermaceti
'greasy stuff' is the definition.
'meat recipes sadly lacking energy' is the wordplay.
I cannot really understand how this works, but
'energy' could be 'pe' (P.E. is an example) and 'pe' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'in' acts as a link.
(Other definitions for spermaceti that I've seen before include "waxy matter" , "It's used in candles" , "Waxy substance from whales" , "Chandler's material" .)