Bread in such a pâtisserie (7)
I believe the answer is:
chapati
'bread' is the definition.
(chapati is a kind of bread)
'in such a patisserie' is the wordplay.
'in' indicates the answer is hidden within the clue.
'CHAPATI' is hidden in the letters of 'such a patisserie'.
(Other definitions for chapati that I've seen before include "Piece of bread (Indian)" , "Indian food" , "Unleavened bread of the subcontinent" , "Unleavened bread of India" , "I may be taken in with Indian" .)