A mixing vessel for use with a motorized food processor, the vessel comprising: a vessel wall including an cylindrical upper section, a frustoconical lower section and a junction between the cylindrical upper section and frustoconical lower section, the cylindrical upper section having a longitudinal axis generally centered within the cylindrical upper section and an upper opening defining an upper end of the vessel wall, the frustoconical lower section being tapered from the junction towards a lower circular opening defining a lower end of the vessel wall, the lower opening being smaller than the upper opening, the two openings (5, 7) being eccentric, an upwardly tapered base for removably closing the lower circular opening, the upwardly tapered base extending through the lower circular opening to a height adjacent the junction between the cylindrical upper wall section and the frustoconical lower wall section, a securing ring threadably engageable with a threaded lip formed at the lower circular opening for securing the upwardly tapered base within the opening, a vertical rotational spindle located through the centre of the base, and a blade assembly located on the spindle, the blade assembly comprising a pair of upwardly extending blade arms, a pair of radially extending blade arms and a pair of downwardly extending blade arms, and wherein the spindle and blade assembly are rotational about a rotational axis that is off-set from the longitudinal axis, wherein the frustoconical lower section comprises a plurality of contiguous cambered protuberances forming a hypocycloidal inner surface within the frustoconical lower section. a vessel wall including an cylindrical upper section, a frustoconical lower section and a junction between the cylindrical upper section and frustoconical lower section, the cylindrical upper section having a longitudinal axis generally centered within the cylindrical upper section and an upper opening defining an upper end of the vessel wall, the frustoconical lower section being tapered from the junction towards a lower circular opening defining a lower end of the vessel wall, the lower opening being smaller than the upper opening, the two openings (5, 7) being eccentric, an upwardly tapered base for removably closing the lower circular opening, the upwardly tapered base extending through the lower circular opening to a height adjacent the junction between the cylindrical upper wall section and the frustoconical lower wall section, a securing ring threadably engageable with a threaded lip formed at the lower circular opening for securing the upwardly tapered base within the opening, a vertical rotational spindle located through the centre of the base, and a blade assembly located on the spindle, the blade assembly comprising a pair of upwardly extending blade arms, a pair of radially extending blade arms and a pair of downwardly extending blade arms, and wherein the spindle and blade assembly are rotational about a rotational axis that is off-set from the longitudinal axis, wherein the frustoconical lower section comprises a plurality of contiguous cambered protuberances forming a hypocycloidal inner surface within the frustoconical lower section.