A single cup brewer includes a steeping cup and a drain plug. The steeping cup includes a sidewall extending from a base to form a contained space. The steeping cup also includes a tapered drain extending from the base and away from the contained space. The tapered drain has a tapered drain hole tapering from a top diameter to a bottom diameter through the base of the steeping cup. The drain plug includes a stem and a tip extending from the stem. The tip has a truncated spherical shape, which is a sphere truncated substantially perpendicular to an axis of the stem on the top surface and the bottom surface of the tip. The truncated spherical shape has a tip diameter greater than a width of the stem, greater than the bottom diameter of the drain hole, and less than the top diameter of the drain hole.
