The Black Buffalo Horn Nut, Bat Nut, Devil Pod, Buffalo Nut is the seed pod of an Oriental aquatic plant. An average nut is about 3 inches long and are toxic if uncooked. In Vietnam they are cooked with rice and vegetables or simply boiled in salted water. They taste like chestnuts but have more texture. | 347-68-VJNET [347-688-5638] | vjnetcast[at]gmail.