Tatara Iron is a traditional Japanese method of producing iron using a clay furnace called a tatara. This technique dates back to ancient times and involves smelting iron sand with charcoal. The process typically takes several days and requires skilled artisans to manage the temperature and materials. The resulting iron, known for its high quality, is often used in the production of samurai swords and other tools. The unique properties of Tatara Iron come from the specific types of iron sand and charcoal used, as well as the careful control of the smelting process, which enhances its strength and durability.