Grandma's bread? (3)
I believe the answer is:
nan
I believe this clue is a double definition.
'grandma's' is the first definition.
(nan can informally mean a grandmother)
'bread?' is the second definition.
(variant spelling of naan)
(Other definitions for nan that I've seen before include "Granny; bread" , "A relative (colloq.); unleavened bread" , "Type of Indian bread" , "Gran" , "Grandmother (colloq.)" .)