Wasabi is a root that is ground up and formed into powder. Mix this high quality wasabi powder with a small amount of water to form a thick paste. Add wasabi to soy sauce or put directly on sushi and sashimi for a cool spicy flavor. Additional ideas for using wasabi can be as a seasoning for butter, ranch dressing, baked potatoes, meat dishes, create a cocktail sauce by adding to ketchup and more. The prepared tube is a convenient way to add wasabi without mixing the powder into a paste, however, the powdered form is a higher pertentage of wasabi root.