What is a common technique used to enhance the appearance of a dish before serving?

Garnishing is a common technique used to enhance the visual appeal of a dish before serving. It involves adding decorative elements, such as herbs, edible flowers, fruits, or sauces, that complement the dish's flavors while also making it more appealing to the eye. Effective garnishing not only improves the aesthetics of the dish but can also elevate the overall dining experience by adding color, texture, and an element of creativity. Chefs often use garnishes that tie into the flavors of the dish, making them not only decorative but also functional.

Marinating, broiling, and poaching are all cooking techniques focused primarily on the preparation and cooking of food rather than on presentation. While these methods contribute to the dish's overall quality and flavor, they do not specifically address enhancing the visual appeal prior to serving. Therefore, garnishing stands out as the primary technique aimed at improving a dish's appearance.