Strong flavouring eased in for cooking (7)
I believe the answer is:
aniseed
'strong flavouring' is the definition.
(I've seen this before)
'eased in for cooking' is the wordplay.
'for cooking' indicates anagramming the letters (letters prepared or cooked into a new form).
'eased'+'in'='easedin'
'easedin' with letters rearranged gives 'ANISEED'.
(Other definitions for aniseed that I've seen before include "Liquorice flavouring, used in cookery" , "Strong herbal flavouring" , "Liquorice flavouring -- ie Danes (anag)" , "Eased in (anag)" , "Licorice-flavoured sweets" .)