You could probably compare it to dry roasted peanuts. Wild rice is an aquatic plant. It grows in water from one to three feet deep and forms dense stands resembling tall grass. It is an annual and naturally re-seeds itself. Upon ripening, the grains fall into the water and a portion of them sprout the following spring.
Seed can stay viable under water for up to seven years, thus ensuring a crop even after a bad year.
It can be readily seeded, but you must start with green seed that has not been allowed to dry out. This is usually only available in the fall, during harvest time. There are commercial sources. Check in the classifieds in hunting magazines. There are many strains of wild rice, which differ in height, and more importantly, grain size.