French beef cooked minus oil (8)
I believe the answer is:
limousin
'french beef' is the definition.
(breed of French cattle)
'cooked minus oil' is the wordplay.
'cooked' is an anagram indicator (letters cooked into a new form).
'minus'+'oil'='minusoil'
'minusoil' anagrammed gives 'LIMOUSIN'.
(Other definitions for limousin that I've seen before include "French breed of cattle" , "Kind of stock" , "Cow" , "French district" .)