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 pieces of food. For example, when cooking pasta, a strainer helps drain the water while keeping the noodles intact. Strainers come in various shapes and sizes, including colanders and fine mesh strainers. Colanders are often used for draining larger amounts of food, while fine mesh strainers are perfect for tasks like sifting flour or straining sauces. Using a strainer makes cooking easier and helps achieve the desired texture in dishes.