Jerusalem artichoke plants (Helianthus tuberous), also known as sunchokes, are perennial relatives of the sunflower. The edible portions are the fat, misshapen tubers that grow below ground. Tubers are dug in the fall. They can be cooked like a potato, either fried, baked or boiled, or eaten raw with a flavour and crunch similar to water chestnuts. Also known as sunchokes or earth apples. Sold as a bulb, 2 bulbs per package.