I am a wimp when it comes to pepper-based, spicy “red” heat, but I have a high threshold for the sinus-clearing “green” heat of wasabi and horseradish. Beyond dabbing a bit of sushi with the green paste, I like to keep a jar of the powder around to zhuzh up dips, dressings, and mayo.
Source: LifeHacker – Spice Up Bland Condiments With Wasabi Powder