Handcrafted Copper Mug Features A high-quality copper mug, like the one in your image, is prized for its artisanal craftsmanship and its ability to keep drinks exceptionally cold. Authentic Design: These mugs usually feature a hand-hammered texture, which not only adds to the rustic aesthetic but also increases the surface area for cooling. Material & Lining: Traditional mugs are made of solid copper and are often tin-lined on the inside. This lining is crucial for food safety, as it prevents the copper from reacting with acidic beverages. Decorative Handles: The handles are typically made from cast brass or bronze, often featuring intricate patterns. They are securely riveted to the body to ensure long-term durability. Superior Temperature Retention: Copper is an excellent conductor; it quickly adopts the temperature of the liquid, providing a chilled sensation against the lips and hands.