You only need some water and in an instant will have the freshest wasabi ever. I love the taste and it's so very easy to prepare. It's spicy enough but won't make you cry like other wasabis if you put too much. It's very convenient, since it's dry it won't go bad as quickly as paste wasabi so it's perfect if you, like me, are the only one in your family that likes wasabi! Plus the jar is huge, it will last me a lifetime. And I really like that they tell you exactly how much "real" wasabi is in it, unlike other brands. Absolutely recommended!