The container-grater comprises a base (10) on which an inverted cup-shaped element (12) having a polygonal cross-section is mounted rotatably so as to define a chamber (14) for containing the food product. The base (10) includes a grating plate (18) which constitutes the bottom of the chamber (14) and has a plurality of through-holes (20), with the edges of which respective teeth (22) that project into the chamber (14) are associated. Furthermore, a threaded rod (30) extends upwards from the plate (18) into the chamber (14) and a pressure plate (32) has a central, threaded hole (34) which is engaged by the rod (30) and an outer perimeter suitable for engaging with the internal wall of the element (12) in a manner such that rotation of the element (12) relative to the base (10) brings about translation of the plate (32) along the rod (30) and compression of the food product against the plate (18) so that the food product is broken up and dispensed from the containing chamber (14). The container-grater further comprises means for cutting the grated product, which are provided at the side of the grating plate (18) remote from the containing chamber (14).