A steamer is a kitchen appliance used for cooking food by steaming. It works by heating water to create steam, which then cooks the food placed in a perforated container above the water. This method helps retain nutrients and flavors, making it a healthy cooking option. Steamers can be electric or stovetop, and they are often used for vegetables, fish, and dumplings. In addition to kitchen steamers, the term "steamer" can also refer to a type of boat, known as a steamship, that is powered by steam engines. These vessels were commonly used in the 19th and early 20th centuries for transportation and trade across oceans and rivers.