This coffee maker is for the coffee connoisseur who has everything. Using denatured alcohol to heat the water, the brewing cup collects the evaporated water and mixes it with coffee grounds. As the water container cools it sucks the coffee through the siphon tube and back into the urn… Viola! There’s your cup of coffee. Brewing time is about 12 minutes but can be decreased if hot water is added to the urn. Uses an open flame so keep out of reach of pets and children.