Abstract: A packaging unit for a consumable product, comprises a tub-shaped container of a first material for containing the product, a casing of a second, thermally-insulating material for holding and rigidly supporting the container, and a closure of thermally-insulating material for the casing, the casing having an opening for allowing access to the contents of the container when the container is held in the casing, means for removable and replaceable engagement of the closure with the casing for alternately sealing off or freeing the access to the contents of the container, the container being insertable into the casing via the opening, and the casing and container being configured and arranged to preclude separating the container from the casing once the container has been received therein, the container and casing thus forming an integral unit.