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Japanese cast iron teapots — tetsubin (鉄瓶) — occupy a unique space in the tea world. They are functional brewing vessels, heirloom-quality craft objects, and arguably the most photogenic item in any kitchen. But there is also a lot of misinformation about them. This guide is researched against Japanese manufacturer specifications and government-published traditional craft documentation. What a Tetsubin Actually Is A traditional tetsubin is a cast iron kettle designed to boil water for tea. It has a cast iron body with a pouring spout, a removable lid with a knob (often copper or iron), and a handle (tsuru / 弦) that arches over the top [1]. ...

Japanese kitchen knives have earned a reputation as the finest cutting tools in the world. This guide covers everything you need to know — from steel metallurgy to daily care — whether you are buying your first Japanese knife or adding to a seasoned collection. Why Japanese Knives? Japanese knives differ fundamentally from Western-style knives in three ways: Harder steel — Japanese knives typically use steel hardened to 58–65 HRC versus 52–58 HRC for most German knives. This allows a much sharper edge that stays sharp longer. Thinner geometry — The blade cross-section is significantly thinner behind the edge, reducing resistance as food passes through. Different edge angles — Most Japanese knives are sharpened to 12–15° per side, compared to 20° for Western knives. The trade-off is durability: harder steel is more brittle. A Japanese knife should not be used on bones, frozen food, or hard squash. ...