The Moscow Mule.

Oprah's favorite drink:
Moscow Mule

• 1 ounce vodka 
• 1 tsp. sugar syrup
• Fresh lime juice
• 1/2 cup ginger beer
• 1 sprig fresh mint
• 1 slice of lime

In a copper mug, pour vodka over ice. Add sugar syrup and lime juice. Top with ginger beer and stir. Garnish with mint sprig and lime slice.