👉 A base burner is a type of device used in cooking, typically for heating food or water. It consists of a cylinder that is filled with a liquid (usually oil) and has an opening at one end to allow air to enter. The flame of the fuel, such as wood, can be directed through the base burner by means of a chimney or a gas pipe. When the fuel is burnt, it produces heat, which is used to cook food or water.