The wasabi most of us get at sushi restaurants, or from the store, isn’t wasabi. That green, slightly bitter powder is often made out of horseradish. In higher end restaurants, real, unprocessed wasabi is served, and prized for its fresh taste, lack of bitterness, and unique sharpness. It has the pungency of…
Source: LifeHacker – Grow Wasabi Like a Houseplant