The siphon coffee brewing phenomenon is a centuries old method of extracting full spectrum flavor from the coffee beans. This coffee brewing method uses a unique combination of steam, vapor, precise temperature control, full immersion and low-pressure extraction to produce a rich, robust cup of coffee. Until now, the science behind this brewing method has required hands-on, labor-intensive skill, patience and attention to detail to perfect this technique. At restaurants, a siphon brewed coffee often costs 3 to 5 times that of traditional cup of coffee.