Abstract: The invention is directed to an apparatus for brewing a beverage such as coffee or tea. A disposable disc-shaped receptacle contains a predetermined quantity of solid beverage material. The flat lower surface of the receptacle contains a plurality of perforations permitting a flow of hot water into the receptacle for brewing the beverage material. The upper portion of the receptacle is a concave flexible membrane. An actuating rod or stick is attached to the membrane for manually flexing the membrane up and down during brewing. The user places the receptacle into a cup of hot water and using the stick, manually flexes the membrane up and down inducing successive positive and negative pressure variations inside the receptacle. These pressure variations suck and expel hot water through the perforations and thoroughly circulate the water inside the receptacle and throughout the beverage material for brewing.