Strong flavour eased in cooking (7)
I believe the answer is:
aniseed
'strong flavour' is the definition.
(I've seen this before)
'eased in cooking' is the wordplay.
'cooking' indicates an anagram (cook can mean to falsify or distort).
'eased'+'in'='easedin'
'easedin' anagrammed gives 'ANISEED'.
(Other definitions for aniseed that I've seen before include "Eased in (anag)" , "Plant" , "Strong flavouring often used in sweets" , "Flavouring in pastis" , "Die sane (anag)" .)