A sterilization container having a lid and a bottom. The lid is provided with a plurality if bimetal valves that will fully open and fully close at a preset temperature. The lid also includes a pressure equalization valve to relieve pressure from the container that will occur during the heating and cooling process. The bottom and the lid are formed from light weight and highly durable material so provide an easily handled and long lasting apparatus. Each lid includes a plurality of recesses and each bottom includes a plurality of complimentary projections such that multiple containers can be safely stacked upon one another.