Found this heavy, spiked metal disc in the back of a junk drawer. Sharp as needles. No idea what it’s used for?

any tabletop display.

To keep a kenzan in good condition, regular cleaning is essential. After use, it should be rinsed to remove any plant debris, and then dried thoroughly to prevent rust. A soft brush can be used to dislodge any stubborn bits of plant matter lodged between the spikes.

For kenzans made of materials prone to rust, a light coating of oil can help protect the metal. It is also important to store the kenzan in a dry place, as prolonged exposure