Abstract: An apparatus for the brewing of a beverage by transmission of an aqueous fluid through a sachet (4,16,39) containing a beverage brewing ingredient, the apparatus comprising: one or more injectors (14,63) to inject the acqueous fluid into the sachet (4, 16,39) during the brewing; and a clamp for the sachet, the clamp comprising one or more members (1,2,12,13,30,31,61) that are movable to open and close the clamp, the members having inner surfaces which in a closed position of the clamp define a cavity adapted to substantially enclose and support the sachet (4, 16, 39) during the brewing and further adapted to define a beverage exit pathway in a lower part of the cavity, and wherein the inner surface of a least one clamp member comprises at least one deformable region (3, 30,43) mounted on a support that is movable while the clamp is in the closed position, whereby the shape of the cavity or of the exit pathway can be changed while the clamp is in the closed position to provide a desired brewing configuration o