Which cocktail is traditionally served in a copper mug?

The Moscow Mule is traditionally served in a copper mug due to a combination of historical and practical reasons. The copper mug is not just a unique visual element; it enhances the drinking experience by maintaining the cold temperature of the drink. The Moscow Mule is a refreshing cocktail typically made with vodka, ginger beer, and lime juice, and the chilled copper mug adds to its crisp and invigorating nature.

The use of copper also contributes to the flavor profile; the metal reacts with the ingredients to create a slight metallic taste that complements the drink. Additionally, the tradition of serving the Moscow Mule in this type of mug has become iconic, symbolizing the cocktail itself and often making it a preferred choice for bartenders and cocktail enthusiasts alike.

Other cocktails mentioned in the options have their own specific glassware suited to their ingredients and presentation. The Mint Julep, for example, is traditionally served in a silver or pewter cup, and the Mai Tai is typically served in a rocks glass or tiki mug. The Mimosa is generally enjoyed in a flute or a wide champagne glass. Each of these drinks has its own established serving vessel, but the copper mug is uniquely associated with the Moscow Mule, making it the correct choice.