3 pounds high—process at 13 pounds.
4 pounds high—process at 14 pounds.
If the gage reads low—
1 pound low—process at 9 pounds.
2 pounds low—process at 8 pounds.
3 pounds low—process at 7 pounds.
4 pounds low—process at 6 pounds.
Have canner thoroughly clean.—Wash canner kettle well if you have not used it for some time. Don’t put cover in water—wipe it with a soapy cloth, then with a damp, clean cloth. Dry well.
Water-Bath Canner
Water-bath canners are available on the market. Any big metal container may be used as a boiling-water-bath canner if it is deep enough so that the water is well over tops of jars and has space to boil freely. Allow 2 to 4 inches above jar tops for brisk boiling (see sketch). The canner must have a tight-fitting cover and a wire or wooden rack. If the rack has dividers, jars will not touch each other or fall against the sides of the canner during processing.