Married woman producing heavenly food (5)
I believe the answer is:
manna
'heavenly food' is the definition.
(I've seen this before)
'married woman' is the wordplay.
'married' becomes 'm'.
'woman' becomes 'anna' (**).
'm'+'anna'='MANNA'
'producing' acts as a link.
(Other definitions for manna that I've seen before include "wonderful food" , "miraculously sustaining food" , "Special food" , "Miraculous food from Heaven" , "Food God gave to Moses" .)