Asahi Nagao Tsubame-Sanjo Pure Copper Dharma Rock Glass 340 ml

Product description

Get inspired by the Art of Chill: Pure Copper Rock Glass from Tsubame-Sanjo. Elevate every sip with the Asahi Nagao Pure Copper Rock Glass, a functional masterpiece crafted in the storied metalworking city of Tsubame-Sanjo, Japan. This glass is more than just a vessel; it is a direct connection to centuries of Japanese artisan tradition, designed to enhance the chill and flavour of your favourite beverages. 

The Tsubame-Sanjo region in Japan's Niigata Prefecture stands as the country's preeminent hub for metalworking, with a rich blacksmithing history dating back to the Edo period. This area is globally renowned for its exceptional craftsmanship, producing nearly 95% of all domestic Japanese tableware. The production of pure copper mugs and drinkware is a particular specialty of Tsubame City. 

Master artisans, upholding centuries-old traditions, meticulously hand-polish and often apply a distinctive hammered finish (tsuchime) to each piece. This pure copper construction provides a superior drinking experience, leveraging the metal's high thermal conductivity.

The mugs instantly chill the surface and maintain a refreshingly cold temperature for beverages like beer or whiskey, often causing the exterior to frost over. These copper vessels are celebrated worldwide as a perfect fusion of technical mastery, traditional heritage, and functional elegance.

Unparalleled Cooling Performance Handcrafted from pure copper, this rock glass is engineered for the perfect cold drink experience. Copper is a highly conductive material, which delivers two immediate benefits: Instant Chill and Sustained Cold.

Product features

• Instant Chill: The moment you pour a cold drink or add ice, the copper instantly absorbs the cold and transfers it across the entire surface. The exterior of the glass will frost over quickly, confirming your drink is perfectly chilled. 
  
• Sustained Cold: The copper material acts like an insulator for cold temperatures, keeping your whiskey, iced coffee, shochu, or cocktail colder for significantly longer than traditional glass. Masterful Japanese Craftsmanship Manufactured by Asahi Co., Ltd. (distributed by Nagao Co., Ltd.), this glass showcases the skill of Tsubame City's master metal polishers. 
  
• Hammered "Dharma" Finish: The glass features a chic, traditional, hammered finish (tsuchime)—a signature of Tsubame-Sanjo copperware that is both beautiful and functional, offering a secure grip. 
  
• Hand-Polished Perfection: Each glass is meticulously finished and hand-polished by skilled artisans, ensuring an immaculate surface. The interior is often plated with tin or nickel for a safe and beautifully polished drinking surface. Origin of Quality: Tsubame-Sanjo is a region globally celebrated for producing nearly 95% of all Japanese-made tableware. Purchasing this glass supports a tradition of excellence that has been recognized internationally. 
• Product Details Capacity: 340 ml (approx. 11.5 fl oz), Material: Pure Copper (often with a tin-plated interior), Origin: Tsubame City, Niigata Prefecture, Japan 

Care Note: Due to the copper's single-ply construction and extreme cold conductivity, the glass is designed to develop condensation heavily on the exterior, serving as a visual indicator of its power as a cooling vessel. It is for cold beverages only, as it becomes very hot with warm liquids. Hand-wash only with a soft cloth and dry immediately to maintain its pristine finish. 

The Asahi Nagao Rock Glass is the ultimate choice for those who appreciate the intersection of supreme function and beautiful, lasting craftsmanship.