The Master Distiller uses a categorization called the 4Fs (Fragrance, Flavor, Feel & Finish) to define and highlight the characteristics of vodka in a clear language to help explain what makes Ketel One Vodka so unique. Fragrance Nosing Ketel One Vodka will return hints of citrus and honey. Flavor After a sip of Ketel One Vodka, you'll taste a crisp, unmistakable coolness. Feel Ketel One Vodka generously and smoothly coats the tongue. Finish The finish of Ketel One Vodka leaves a lively tingle, reminding you of its quality.