Abstract: A stirrer assembly for, in use, stirring liquid in a receptacle with the receptacle lid in place, which includes a receptacle receiving portion which is locatable inside the receptacle, a first guide member which is mountable onto a floor of the receptacle for rotatably guiding the receptacle receiving portion, a second guide member which is defined centrally a receptacle lid and extending downward therefrom, for in use, rotatably guiding an upper region of receptacle receiving portion, a sealing member for releasably sealing the second guide member, and a drive member which is connectable to the upper region of the receptacle receiving portion, for in use, transmitting torque to the shaft upon rotation of the said drive member.