This invention improves the cooling effect of ice in a drinking cup and economizes on the amount of ice used. The invention comprises a truncated cone with the widest base at the bottom, and with a hole at its apex, the hole being large enough to allow a straw to pass through. It also comprises a mechanism located at the apex of the cone, which holds the straw in place. This cone structure prevents ice cubes, which are normally buoyant, from floating up to the surface of the liquid. Instead, the cone forces the ice to congregate near the straw inlet thereby cooling the liquid entering the straw.