Exists in handmade pastry (6)
I believe the answer is:
danish
'pastry' is the definition.
(I've seen this before)
'exists in handmade' is the wordplay.
I cannot really see how this works, but
'exists' could be 'is' (if something 'is', it exists) and 'is' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for danish that I've seen before include "Flat cake - and party's his! (anag)" , "European language" , "Hamlet's nationality" , "course includes article / noun combination" , "_ blue; type of cheese" .)