Vegetable strangely found in a burgee (9)
I believe the answer is:
aubergine
'vegetable strangely found in a burgee' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for aubergine that I've seen before include "Vegetarians might order this" , "Deep purple colour" , "Edible plant" , "Purple vegetable" , "I agree bun could become a strange vegetable" .)