A method of packaging and freezing food substance comprising shaping of a plate of unfrozen food substance and subsequent packaging and freezing of the unfrozen plate of food substance, and wherein a carton packaging is used for packaging the unfrozen plate of the food substance that comprises a substantially rectangular bottom panel with two opposed, long side panels and two opposed, short end panels and a substantially rectangular cover panel, wherein the cover panel and the bottom panel are preferably connected to each other via one of the short end panels; wherein the unfrozen plate of food substance is arranged directly on the bottom face of the carton packaging, following which the cover panel of the carton package is closed over the bottom panel, such that the unfrozen plate of food substance is enclosed completely by the bottom panel, cover panel and side panels of the carton packaging, and following which the carton packaging containing the unfrozen plate of food substance is arranged in a freezer with a view to freezing the plate of food substance whereby the carton packaging is frozen onto the plate of food substance.