Bread riot develops (4)
I believe the answer is:
roti
'bread' is the definition.
(roti is a type of bread)
'riot develops' is the wordplay.
'develops' indicates anagramming the letters.
'riot' anagrammed gives 'ROTI'.
(Other definitions for roti that I've seen before include "Indian bread cooked on a griddle" , "Indian flat round bread" , "Indian flatbread" , "Indian bread (not naan)" , "spicy sandwich" .)