Kind of rice; a bit ma's cooked (7)
I believe the answer is:
basmati
'kind of rice' is the definition.
(basmati is a type of rice)
'a bit ma's cooked' is the wordplay.
'cooked' indicates an anagram (letters cooked into a new form).
'a'+'bit'+'mas'='abitmas'
'abitmas' with letters rearranged gives 'BASMATI'.
(Other definitions for basmati that I've seen before include "Kind of long-grained rice" , "Variety of long-grained rice" , "Fragrant long-grain rice" , "Long-grain rice variety" , "Fragrant variety of rice" .)