Bay containing large aromatic bud (5)
I believe the answer is:
clove
'aromatic bud' is the definition.
(I've seen this before)
'bay containing large' is the wordplay.
'bay' becomes 'cove' (I've seen this before).
'containing' is an insertion indicator.
'large' becomes 'l'.
'cove' going around 'l' is 'CLOVE'.
(Other definitions for clove that I've seen before include "Payment for hostage" , "Spicy bud - section of garlic" , "Flower bud used as a spice" , "Cut" , "A spice; a garlic bulb" .)