Abstract: An adapter for use with at least a pair of dispensers, to provide for convenient stacking of a plurality of dispensers one upon the other, one of such adapters being arranged intermediate each pair of vertically stacked decanters, during usage. The adapter includes a series of ribs and flanges, that provide convenient seating and stable support for a variety of the decanters when stacked one upon the other. The adapter includes an aperture approximately centered thereof, through which a beverage may be brewed, into the decanter arranged therebelow, and the adapter being applied to a beverage brewer during usage, as during a beverage brewing cycle. The cap provides for closure of the adapter aperture, to provide the adapter with the attributes of a lid, and to help retain the warmth of any beverage contained within its dispenser upon which the adapter is applied.