Recipe includes a new pastry (6)
I believe the answer is:
danish
'pastry' is the definition.
(I know that Danish is a type of pastry)
'recipe includes a new' is the wordplay.
'recipe' becomes 'dish'.
'includes' means one lot of letters goes inside another.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'a'+'n'='an'
'dish' enclosing 'an' is 'DANISH'.
(Other definitions for danish that I've seen before include "Relating to one from Copenhagen, say" , "Popular piece of pastry" , "Pastry, from Copenhagen say" , "Scandanavian, pastry perhaps" , "Hamlet's nationality" .)