Japanese Mustard, also known as Wasabi, is a condiment made from the root of the Wasabia japonica plant. It is commonly used in Japanese cuisine and has a strong, spicy flavor. Wasabi is usually served with sushi, sashimi, and other dishes. It is also used as a garnish for various dishes, such as tempura and soba noodles. Wasabi is often referred to as 'Japanese horseradish' due to its similar flavor profile.