Which of the following ingredients is traditionally used in flavored vodka?

Traditionally, flavored vodka incorporates a variety of ingredients to enhance its taste profile, and honey is particularly notable for its role in certain flavored vodka variations. Honey can add a natural sweetness and complexity, making it a popular choice for artisans who create handmade or craft flavored vodkas. This ingredient often complements fruit flavors well and provides a rich mouthfeel, contributing to a smoother drinking experience.

In contrast, while vanilla is also a common flavoring agent in vodka, and chili is increasingly popular for those seeking a spicier option, honey has historical significance in spirits, particularly because of its role in various traditional recipes. Cilantro, on the other hand, offers a fresh, herby taste, but it is not as widely recognized as a typical ingredient for flavored vodka compared to honey. Therefore, honey's traditional use and versatile pairing ability with other flavors make it the correct answer.