The #1-selling style of coffee machine in Europe brews coffee 10 times better because it does it naturally. The process of making coffee this way has been a fixture inJapanese and Scandinavian homes for over 40 years. "Upside-down" vacuum brewing separates coffee from grounds for clean, exquisite taste. The coffee maker works like this: water is held in the lower portion of the coffee pot and the coffeegrounds are placed in the upper pot. When the water begins to boil, the vacuum process causes it to rise up through the tube to mix with the coffee grounds. The newly brewed coffee runs back down to the lower pot ready-to-serve, while the grounds stay inthe upper pot. Makes 5 cups. Defying the Laws of physics to brew the best coffee ever made. o Light weight and portableo Easy to cleano Coffee is ready in less than three minuteso Coffee is vacuum-brewedoCoffee carafe fills to five cup level Measures: 5.5" x 6.75" x 8.5" Does this coffeemaker use a lid?The lid is used to cover the very top pot.Do I use a gas or electric stovetop?It can be used on either gas orelectric, a gas stoves requires a defuser.How much water do I put in it?You must use at least five cups of water when brewing coffee.How does it work?As the water boils, it is siphoned up to the top pot where it is theninfused with the coffee ground. A little water will always remain in the bottom pot.How long does it take to make a pot of coffee?The coffee is ready to drink in under 3 minutes.