Ingredient of healthy meals? (5)
I believe the answer is:
thyme
'ingredient' is the definition.
(thyme is a kind of ingredient)
'of healthy meals?' is the wordplay.
'of' says the answer is hidden in the clue.
'THYME' is hidden within 'healthy meals'.
(Other definitions for thyme that I've seen before include "Plant of the mint family" , "Shrubby herb" , "A herb; sounds like prison sentence" , "Aromatic shrub" , "Culinary herb of the mint family" .)