Ooya Seisakusho Grater

Unlike machine-stamped steel graters that tear ingredients, the individually hand-raised teeth on this copper tool slice through fibers cleanly. This preserves the cellular structure of your food, resulting in a lighter, fluffier texture that retains more moisture and flavor.

No, this grater is not dishwasher safe. The harsh detergents and high heat of a dishwasher will damage the tin plating and ruin the integrity of the hand-forged copper.

Rinse the grater immediately after use with warm water and a soft brush to dislodge any food particles. Avoid abrasive scrubbers, and always dry it thoroughly with a soft cloth before storing to prevent oxidation.

Yes, the pure copper body will naturally develop a warm, dark patina with use and exposure to air. This is a normal characteristic of the material and does not affect the performance of the grater.

No, this is a traditional, minimalist tool. It does not include a non-slip base or an attached container, so you will need to hold it securely over a bowl or cutting board while grating.

The tin plating serves two purposes: it provides a smooth, non-stick surface that allows ingredients to glide easily across the teeth, and it acts as a protective barrier to prevent the copper from corroding or reacting with acidic foods.