Jerusalem Artichoke is the root of the plant Helianthus Tuberosus, which is closely related to the sunflower. Native to North America, these naturally sweet tubers were first cultivated by Native Americans and then brought over to areas of Europe and Asia. Jerusalem Artichokes are most commonly dried and ground into flour after harvesting. They can also be consumed as a vegetable side dish. Jerusalem Artichokes contain a significant amount of the polysaccharide inulin, a dietary fiber known to help support a healthy digestive tract. They are also an excellent source of iron and protein, a good source of thiamin and potassium, and a source of vitamin C, niacin, and phosphorous. Edgar Cayce often recommended this vegetable. One bottle is a 16 - 50 day supply.