yoshikawa | oros grater from japan large | design hideyoshi nagoya, junji yawata, aya sunagushi

if you have a source for real wasabi, you need the oros grater: the rhizome, the root offshoot of the spicy japanese water horseradish, is ground into a paste and often served with sushi. you can certainly also use european horseradish or ginger and thus have a fresher ingredient than the commercially available green tube paste.
The large version of the grater is also suitable for parmesan, apple or similar.

The Oros grater is part of a series of simple kitchen helpers manufactured by the Japanese company Yoshikawa.