Abstract: A container lid, adapted for use with a cold or hot drink, is provided with a condiment reservoir built into the lid. An orifice for drinking a liquid in the container is provided on one side of a planar surface forming the lid and an open top recess, forming the condiment reservoir, is provided on the other side. Closed side walls and a bottom extending down toward the container serve to form the reservoir. The condiment can be carried directly in the reservoir or in a condiment holder, such as a packet or cup, placed in the reservoir. The side walls extend at an acute angle from the planar surface to allow multiple lids to nest together prior to use. A mating groove and annular projection in the recess and on a cup, respectively, serves as a snap fit interlock system to hold the cup in place. The side walls of the recess include a semicircular wall and a diagonal wall connecting the ends to form the reservoir.