A device (1) for preparing extrudable food products, comprising a working chamber (31) capable of housing ingredients in operation of the device (1); an extrusion die (120); a rotation shaft (32) configured for stirring the ingredients and extruding the food products through the extrusion die (120); and a driving system (64) by which the rotation shaft (32) is driven; wherein the driving system (64) is configured to separate the extrusion by at least one time period during which the rotation shaft rotates in a first direction which is opposite to a second direction in which the rotation shaft (32) rotates to extrude the food products. Therefore build-ups inside the working chamber (31) can be possibly removed by the sticky dough hit/lifted by the stirring bars (321) on the rotation shaft (32) when the rotation shaft (32) rotates reversely.
