A stirrer arrangement for an ice-cream or yogurt machine includes a motor shaft hub adapted for coupling at a shaft of a motor within a chilling container, and a stirring blade unit which includes a plurality of blade members radially and outwardly extended from the motor shaft hub. Each of the blade members has an inclined pushing surface, such that when the motor shaft hub is rotated at a stirring direction, the blade members are spun for creating a radial stirring vortex within the chilling container to outwardly, radially, and upwardly push liquid material from a bottom of the chilling container to a top thereof and to inwardly, radially, and downwardly suck the liquid material from the top of the chilling container to the bottom thereof.
