The primary ingredient in Moscow Mule cocktails is vodka. This refreshing beverage is a classic cocktail that combines vodka with ginger beer and lime juice, typically served in a distinctive copper mug. The drink's origins date back to the 1940s, and it has surged in popularity due to its unique flavor profile and vibrant presentation. The spiciness of the ginger beer pairs perfectly with the acidity of the lime, creating a balanced and invigorating experience. The Moscow Mule has become a staple in bars and homes around the world.