A "chashin" (or "tsutsu") is a slender tool inserted into the spout of a teapot to clear blockages caused by tea leaves. Choosing the wrong material or tip shape can chip the rim of your teapot's spout or scratch its interior. We explain the characteristics of brass and bamboo/wood versions, along with how to choose them safely.
1. Comparison of Chashin by Material
| Material | Pros | Cons & Precautions |
|---|---|---|
| Brass/Copper | Resistant to breaking even when thin; highly durable. Offers a sophisticated, artisanal aesthetic that looks great with tea canisters. | If the tip is too sharp, it can scratch pottery, so choose a product with a rounded, smooth finish. |
| Natural Bamboo/Wood | Soft and guaranteed not to scratch the surface of the teapot. Flexible. | The thin tip is prone to snapping, and it can wear down with long-term use. |
| Silver | Antibacterial with minimal metallic odor; a premium material. | Expensive and requires regular maintenance to prevent tarnishing. |
2. Etiquette for Use Without Damaging the Teapot
When using a chashin, do not scrape the inner wall of the spout forcefully. Instead, gently push (or poke) the tea leaves caught in the filter holes back into the interior of the teapot with a delicate touch.
