Abstract: A bottle has a rounded bottom, a lateral wall and a separate base. The base comprises a lateral wall which surrounds and is fixed to a lower portion of the lateral wall of the bottle. It also comprises an annular support boss and a bottom part comprising an area supporting the bottom of the bottle. The bottle comprises a passage for a heat exchange fluid. This passage includes inlet and outlet areas for the heat exchange fluid. The flow of the fluid through the passage passes across part of the bottom of the bottle. This facilitates effective pasteurization or deep-freezing of the bottle's contents.