What is the garnish used in a Kamikaze on the Rocks?

The garnish used in a Kamikaze on the Rocks is lime. This choice is correct due to the classic ingredients typically used in a Kamikaze cocktail, which consists of vodka, triple sec, and lime juice. The lime not only enhances the flavors of the drink but also complements the citrus notes from the triple sec. It's common in various cocktails, especially those that feature tequila or vodka, to use lime as a garnish, emphasizing the refreshing taste of the beverage. While other garnishes like cherries, olives, or lemons are popular in different cocktails, they do not align with the traditional presentation of a Kamikaze, making lime the most suitable and authentic choice for this specific drink.