rismi -ris- gismu

x1 is a quantity of rice [a type of grain] of strain/cultivar x2.

See also gurni.

In notes:

gurni
x1 is grain/[British: corn]/cereal from plant/species x2.
djagru
g1=c1 is grain from plant/species g2, edible/giving nutrition to x3=c2.
risyvanju
v1 is made of/contains/is a quantity of rice wine from rice strain/cultivar/location r2.