With a ceramic whetstone, you maintain the knives and keep them sharp at all times.

Green side has roughness #240. This site sharpens and repairs the egg and blade. White page has roughness #1000. This polishes and smoothes the surface for small irregularities.

The whetstone is 20x7x3 cm and it comes with a protective case with non-slip feet for predictable grinding.

Allow the grinding stone to soak in water in the lid before use.