AUTHENTIC MOSCOW MULES - This Mug is NOT an Imitation Copper Plated Mug, nor is it Lined with Tin, Nickel, Steel, or Food Lacquer Inner Coatings; This Ensures the Appropriate Citric Acid to Copper Reaction for which Moscow Mules are Known; Because of This, the Mug WILL Tarnish; This is Normal for an Authentic Copper Moscow Mule Mug.
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