Which brewing method uses a vacuum to brew coffee?

The siphon brewing method, also known as a vacuum coffee maker, uses vapor pressure and vacuum to brew coffee. This method involves two chambers with water in the lower chamber and coffee grounds in the upper chamber. When the water is heated, it creates vapor pressure that pushes the water into the upper chamber, mixing with the coffee grounds. After the heat is removed, the pressure decreases in the lower chamber, creating a vacuum that pulls the brewed coffee back down through a filter into the lower chamber. This process results in a unique brewing technique that produces a clean and complex flavor profile, highlighting the coffee's characteristics.

Other brewing methods like pour-over, French press, and drip coffee do not utilize a vacuum mechanism, relying instead on gravity or immersion methods to extract flavors from the coffee grounds. Understanding the distinctive features of each brewing method is essential for appreciating the various ways coffee can be prepared and the results each method yields.