A plastic beer keg including: a container having a base and a wall extending upward from a periphery of the base; a liner within the container, the liner including a base, sidewalls and a mouth; a valve disposed over the mouth of the liner; and a removable lid secured to an upper edge of the wall of the container, enclosing the liner, the lid including an annular outer portion over the upper edge of the wall of the container and an annular inner portion within the annular outer portion, the annular inner portion offset downwardly from the annular outer portion, an opening formed through the annular inner portion, wherein the mouth of the liner is aligned with the opening; characterised in that: the lid includes an annular angled portion extending between the annular outer portion and the annular inner portion, such that the lid is angled downwardly to the opening around the valve; and the liner is expandable under pressure such that the valve moves upwardly in the opening through the lid, wherein the opening in the lid permits the liner to expand without the liner contacting the lid, and wherein the valve is below the height of the wall of the container to protect the valve and above the height of the lid to keep the valve in the proper location both before and after expansion of the liner. a container having a base and a wall extending upward from a periphery of the base; a liner within the container, the liner including a base, sidewalls and a mouth; a valve disposed over the mouth of the liner; and a removable lid secured to an upper edge of the wall of the container, enclosing the liner, the lid including an annular outer portion over the upper edge of the wall of the container and an annular inner portion within the annular outer portion, the annular inner portion offset downwardly from the annular outer portion, an opening formed through the annular inner portion, wherein the mouth of the liner is aligned with the opening; characterised in that: the lid includes an annular angled portion extending between the annular outer portion and the annular inner portion, such that the lid is angled downwardly to the opening around the valve; and the liner is expandable under pressure such that the valve moves upwardly in the opening through the lid, wherein the opening in the lid permits the liner to expand without the liner contacting the lid, and wherein the valve is below the height of the wall of the container to protect the valve and above the height of the lid to keep the valve in the proper location both before and after expansion of the liner. the lid includes an annular angled portion extending between the annular outer portion and the annular inner portion, such that the lid is angled downwardly to the opening around the valve; and the liner is expandable under pressure such that the valve moves upwardly in the opening through the lid, wherein the opening in the lid permits the liner to expand without the liner contacting the lid, and wherein the valve is below the height of the wall of the container to protect the valve and above the height of the lid to keep the valve in the proper location both before and after expansion of the liner.