A reusable lid for use with a jar for canning food. The reusable lid comprises a circular disc having a top side with an upper surface, a bottom side with a planar lower surface extending about the outer circumferential section of the disc, and a ring extending outwardly from the lower surface. The second planar surface on the top side of the disc is lowered from the upper surface by a measurement in the range of 0.015″ to 0.035″, and extends along a circumferential segment that extends between 54° and 144° of the radial circumference of the disc.