Wasabi is the hot and stimulating green paste that lends a characteristic, pungent taste to sushi dishes, dressings and dipping sauces. The wasabi plant, sometimes called Japanese horseradish, has long been used in Japan as an essential condiment for serving with sushi, soba and tofu and more recently to flavour dressings, dips and snacks. Clearspring Wasabi powder contains real wasabi stem, whereas most wasabi products consist of mustard or horseradish with green dyes and other additives. You can recognise its authenticity by its pale grey green colour, which contrasts with the brighter green of dyed wasabi. Makes 45g of paste.