Nanbu Tetsubin kettle Jiyu

Artisan Metalware Series | Authentic Uncoated Japanese Cast Iron Tetsubin Kettle

Transform your daily brewing ritual into a sublime, health-enriching experience. Handcrafted using time-honored traditional techniques, this authentic Japanese **Tetsubin** cast iron kettle is designed specifically to optimize your water quality. Featuring a completely raw, uncoated interior with no enamel lining, the boiling water interacts directly with the high-grade iron core, naturally releasing bioavailable divalent iron ($Fe2+} into the liquid. This subtle biochemical enrichment alters the water profile, imparting an incredibly smooth, mellow, and naturally sweet mouthfeel that drastically elevates the flavor extraction of premium green teas and specialty pour-over coffee. Heavy-set at 2 kilograms with an elegant matte black finish, this heirloom-quality vessel retains heat exceptionally well, making it a functional masterpiece for the discerning tea and coffee connoisseur.

• Water Purification Mechanics: By bringing water to a boil over raw iron, the interior wall binds with chlorine and water-softening agents while diffusing iron content into your beverage, resulting in unparalleled water purity.
• The Pour-Over Companion: The rich thermal conductivity naturally yields hot water that remains at stable brewing temperatures longer, maximizing aroma profile development for both hand-drip coffees and traditional teas.
• Surface Protection Advisory: Because of the incredible heat retention and natural iron density of the base, we highly recommend utilizing a matching cast iron trivet / pot stand to cleanly isolate the hot kettle and protect fine table linens, varnished wood countertops, or delicate glass surfaces.

• Zero Chemical Exposure: Because this interior is raw and completely uncoated, never expose this kettle to dish soaps, dishwashing detergents, oils, or salt. These elements will permanently taint the metal pores, ruin future water taste profiles, and induce harsh rust damage.
• The Warm-Wipe Routine: To dry the exterior, gently wipe down all outer surfaces with a completely dry cloth immediately after use while the kettle body is still radiating heat.
• Thorough Internal Air-Drying: Never leave water or tea sitting inside the Tetsubin for long periods. After pouring your hot water out, remove the lid entirely so the residual body heat can completely evaporate any microscopic interior moisture droplets before storage.
• Thermal Shock Prohibition: Do not suddenly cool down a scorching hot kettle by splashing cold water onto it or placing it on freezing surfaces, as severe thermal shock can crack or fracture raw cast iron metalwork.
• Strict Appliance Boundaries: Intended strictly for heat-safe cooktops. Do not place this dense ironware inside microwave ovens or automated dishwasher machines under any circumstances.