Can Japanese knives go in the dishwasher?

One of the most common questions from new owners is whether Japanese knives can go in the dishwasher. The answer is simple: no. Japanese knives should always be hand washed and dried immediately. Here are three important reasons why:

1. Risk of Corrosion

Many Japanese knives use high-carbon steel, which is more prone to rust than standard stainless steel. The heat, steam and detergents inside a dishwasher strip protective oils and promote corrosion.

2. Edge Damage

The thin, razor-sharp edge of a Japanese knife can easily chip or dull if it rattles against other utensils or the dishwasher racks. This can ruin the precision cutting performance.

3. Handle and Finish Protection

Wooden or composite handles are sensitive to heat and moisture. A dishwasher cycle can cause swelling, cracking or loosening of the handle, while delicate finishes like kurouchi or tsuchime can wear away.

The Right Way to Clean

Always wash your Japanese knives gently by hand with mild detergent, rinse, then dry them immediately with a soft cloth. Proper care will keep your knives sharp, beautiful and long-lasting.