A processed potato is fixed to a carrier of a lead-screw and after the drive of the lead-screw is switched-on, the processed potato starts to perform rotary and at the same time forward motion. After the potato is forced to a blade of a disk the processed potato is cut and the cut part is threaded through a hole of the disk at the blade. The prepared potato is taken up from the opposite side of the disk to a thorn. The prepared potato has got a screw shape with optional direction of rotation and with at least one spiral worm, where the thickness of the screw wall is from 2 mm to 12 mm. Device for producing of the potato product comprises of an U-shaped frame (1) onto which a leading nut (3) is fastened, inside of which is placed the lead-screw (2), wherein the free end of the lead-screw (2) is more remote from the disk (6). The frame is equipped with a drive (4), the second end of the lead-screw (2) is equipped with a carrier (5) for fastening or upholding of a processed potato to the lead-screw (2) and to enable performing rotary and forward motion. The frame (1) is fastened to the disk (6) in which a hole (7) is made having a cutting blade (8), where the blade (8) with the hole (7) is arranged radially from the center to the circumference of the disk (6). The center is identical with the rotation axis of the lead-screw (2).A processed potato is fixed to a carrier of a lead-screw and after the drive of the lead-screw is switched-on, the processed potato starts to perform rotary and at the same time forward motion. After the potato is forced to a blade of a disk the processed potato is cut and the cut part is threaded through a hole of the disk at the blade. The prepared potato is taken up from the opposite side of the disk to a thorn. The prepared potato has got a screw shape with optional direction of rotation and with at least one spiral worm, where the thickness of the screw wall is from 2 mm to 12 mm. Device for producing of the potato product comprises of an U
