Meal includes a new type of pastry (6)
I believe the answer is:
danish
'type of pastry' is the definition.
(I've seen this before)
'meal includes a new' is the wordplay.
'meal' becomes 'dish' (I've seen this in other clues).
'includes' indicates putting letters inside.
'a new' becomes 'an' (I've seen this in other clues).
'dish' enclosing 'an' is 'DANISH'.
(Other definitions for danish that I've seen before include "European language" , "Pastry, from Copenhagen say" , "Scandinavian language" , "Type of pastry cake" , "Like Canute" .)