Krachai is used in Thai cooking. It is a fingerroot also known as Chinese Ginger. Its flavour is milder than ginger. It looks like long fingers on a hand. They are full of vitamin B12. This food is great for aiding in digestion and helping with colic and gas.
It is usually used with Fish, soups, Curry, Beef and Rice. It is generally used grated or sliced thinly. If I am making an Asian soup I will toss in a finger or two for flavour. You can find this in Asian grocery stores.