A strainer is a kitchen tool used to separate solid particles from liquids. It typically consists of a mesh or perforated surface that allows liquid to pass through while trapping larger solids. Strainers come in various shapes and sizes, including colanders and fine mesh strainers, and are commonly used for tasks like draining pasta or rinsing fruits and vegetables. In addition to cooking, strainers are also used in other fields, such as brewing and chemistry. In brewing, they help filter out solids from liquids, ensuring a smooth final product. In chemistry, strainers can assist in separating different components during experiments.