1. Edible portion : Rhizome, Roots, Leaves, Seeds, Herb, Spice, Flowers, Vegetable A herb which grows year after year. It grows to 1.6 m high and spreads to 1 m across. The rootstock creeps under the ground. This is round like a cylinder and branches. This thick rhizome can be 10-12 cm long by 3 cm...