Which characteristic is true for layered shots?

Layered shots are distinctive due to the specific technique required in their preparation. The correct characteristic highlights that these shots require a careful pouring technique to achieve the layered effect. Bartenders often use the back of a spoon to gently pour each layer so that it floats on top of the previous one, taking advantage of the varying densities and colors of the ingredients used. This technique is pivotal in creating visually appealing shots, with each layer clearly distinguished from the others.

Shaking is not a requirement for layered shots; in fact, shaking would combine the ingredients rather than layering them. Similarly, while glassware can vary, layered shots are not restricted to being served in rocks glasses. Cold glasses are not a necessity for presenting a layered shot, as the focus is on achieving the visual effect and flavor balance rather than temperature. Thus, the special pouring technique is paramount in making layered shots successfully.