四棱豆原产非洲,种子、块根、嫩荚、叶和花都可食用。因其营养丰富。被誉为绿色金子。其豆荚长相奇特,形状酷似小香蕉且四角有棱。该豆子含蛋白质34％以上,并具备人体所需的八种氨基酸,块根的蛋白质达12％—24％,相当于马铃薯的4倍。另外,还含有维生素E和多种矿物质,嫩荚炒食鲜嫩可口,嫩叶能做 Polygonum native to Africa, seeds, roots, tender pods, leaves and flowers are edible. Because of its nutrient-rich. Known as green gold. Its pods peculiar, shaped like a small banana and angular edges. The beans contain more than 34% protein and have eight amino acids required by the body. The tuberous protein content is 12% -24%, equivalent to four times that of potato. In addition, also contains vitamin E and a variety of minerals, tender pods fried delicious, young leaves can do