The U.S. Solid siphon coffee maker looks like a science experiment and comes with an alcohol burner that provides continuous hear during the brewing process. This heat will help to extract the flavor and scent of the coffee. When the water is forced back down through the coffee grounds, every last bit of coffee will be extracted. It will make five cups of delicious tasting coffee every time. Our coffee maker is made of quality heat resistant glass and polypropylene making it durable and easy to use. When it is time to clean up, please hand wash only. Make your coffee in style with the U.S. Solid siphon coffee maker.