Abstract: A system for storing food, including a plurality of food-containing packages disposed inside an endless high-density polyethylene wall for surrounding the plurality of food-containing packages and defining an airtight container. The high-density polyethylene wall is no less than one-quarter inch thick and is formed by engaging a heat source into thermal contact with container rim portion and a lid portion, energizing the heat source to partially melt both the rim portion and the lid portion, disengaging the heat source, and introducing the molten lid and rim portions into pressurized contact with one another to fuse them together to define the airtight container.