What element is used to garnish the Henny Strawberry Nirvana?

The correct answer is that the Henny Strawberry Nirvana is garnished with a Henny Badge. This unique element serves several purposes beyond just decoration. It symbolizes the brand's identity, creating a visually appealing presentation that enhances the drink's attractiveness. The badge also indicates that the drink contains Hennessy, showcasing the specific spirit used in the cocktail, which helps patrons associate the flavor profile and branding with their experience.

The use of a Henny Badge as a garnish is particularly effective at promoting the drink and engaging customers, making it more memorable. In contrast, elements like mint leaves, lemon wedges, or strawberries may be common garnishes in many cocktails but do not specifically highlight the unique branding or flavor profile associated with this particular drink. Therefore, the Henny Badge stands out as the correct choice for this garnishing question.