From the Costco comments: "The contents of opened cans can be easily stored in glass mason jars, the ones used for canning, with a canning lid which is vacuum-

From the Costco comments: "The contents of opened cans can be easily stored in glass mason jars, the ones used for canning, with a canning lid which is vacuum-sealed onto the jar with a food saver jar attachment. For jars which are in constant use, use a white plastic screw-on lid available with canning supplies."