The sealed container filled with liquid is designed for making ice. It comprises a tray having a peripheral wall closed on one side by a base and defining on the other side an opening for extracting the ice. The container comprises a seal for sealing the tray, which is sealed above the opening. The base has a deformation protruding inside the tray, which defines externally a transverse groove extending from one edge of the base to the other and opening at each of its extremities on the peripheral wall of the tray, this base having two ridges extending on both sides of the groove.