Liquid smoke is a natural flavoring made by capturing the smoke produced when burning wood. The smoke is condensed into a liquid form, which can then be used to add a smoky flavor to various foods without the need for traditional smoking methods. This ingredient is often used in marinades, sauces, and processed meats to enhance taste. It provides a convenient way to achieve a smoky flavor in dishes like barbecue or grilled foods, making it popular among home cooks and professional chefs alike.