What does the term 'layer' refer to in food preparation?

The term 'layer' in food preparation specifically refers to the technique of arranging different ingredients on top of one another in a dish. This method is often utilized to create visually appealing presentations and to enhance the complexity of flavors and textures. For instance, in dishes like lasagna, trifle, or cakes, layers build a structure that not only looks attractive but also allows each layer to contribute its unique taste when served. Layering is a fundamental culinary practice that can affect the overall taste experience and aesthetics of the dish. This concept is distinct from blending ingredients, serving, or mixing, as it focuses specifically on the arrangement of distinct layers rather than combining everything into a uniform mixture.