How to Clean a Rasp-Style Grater
We find that the following simple strategy works best when cleaning your rasp-style grater.
Be prompt. Cleaning your grater immediately after use makes the job easier. If the grating detritus dries out and bonds itself to the grating surface, soak the grater until the particles are softened before proceeding. When you clean it, rinse it under warm water and then run a wet sponge along the grating surface, moving toward the handle (moving away from the handle will cause bits of sponge to get caught in the teeth).