Abstract: A device that can be attached to a baby bottle to facilitate the mixing of solid food particles into liquid. The shaker top comprises a circular-dome shaped mixing chamber (12) with internal screwthreads (24) on the interior wall of said chamber that are proportioned and dimensioned to accommodate the attachement of the shaker top to a baby bottle. Support wedges (34) are formed above the internal screwthreads on the inside wall of said chamber to provide a means of internally retaining a mixing disc (10). Said mixing disc is comprised of a plurality of uniformly spaced arms (20) radiating from a center post (22) which acts as a handle to ease the insertion and removal of the disc member. The arms of the mixing disc are diamond shaped to produce a multitude of shear points (40) which increase the cutting action during the shaking process.