Method is reported to produce delicious food (5)
I believe the answer is:
manna
'delicious food' is the definition.
(I've seen this before)
'method is reported' is the wordplay.
'method' becomes 'manner' (I've seen this before).
'is reported' shows a homophone (sound like).
'manner' sounds like 'MANNA'.
'to produce' acts as a link.
(Other definitions for manna that I've seen before include "Food God gave to Moses" , "Heavenly grub?" , "Miraculous stuff dropped" , "Heavenly nourishment" , "Food provided by God for the Israelites in the wilderness" .)