The Tzartak aperitif is an extremely delicate and difficult-to-make beverage with many different ingredients. When made properly, the evaporation point of the drink's main ingredient is one-half degree lower than the body temperature of the consumer. Thus, the liquid evaporates immediately after it touches the tongue, and the flavor is carried entirely by the vapors. However, the slightest miscalculation in the mixing process will crash the vapor point, and the entire drink will evaporate away.

In 2368, Guinan made a Tzartak aperitif to make a point to Captain Jean-Luc Picard about the delicacy of the timeline. (TNG: "Time's Arrow")