Wash cranberries and sort, removing stems, spoiled berries, etc.
Put cranberries and an equal amount of water into a pot.
Bring to a boil. Reduce heat and cook until cranberries begin splitting.
Strain juice and refrigerate for 24-48 hours undisturbed.
Canning Cranberry Juice
Carefully pour off top of cold cranberry juice, leaving sediment behind. You want the clearest juice possible for canning.
Bring juice to a boil, adding sweetener if desired for taste.
Heat the sweetened juice mixture to 190º F (88º C) for 5 minutes. (this is less than boiling)
Packing the Jars
Ladle hot juice into hot jars, leaving 1/4” headspace.
Wipe rims of jar clean with damp towel or paper towel. You don't want sticky rims to interfere with the seal.
Add your canning lids and rings, finger tight.
Place jar in the canner. When all jars are filled, process according to the instructions below
Processing with Water Bath Canner
After all jars are in the canner, lower rack into the water. Bring to a full rolling boil.
When the water comes to a rolling boil, start your time.
Processing Time
Pint jars are processed for 15 minutes.
Quart jars are processed for 15 minutes.
Be sure and adjust your time for altitude: 0-1,000 ft – 15 minutes 1,001-3,000 ft – 20 minutes 3,001-6,000 ft – 25 minutes 6,001-8,000 ft – 30 minutes 8,001-10,000 ft – 35 minutes
Process for the full time indicated, adjusting the heat as needed to maintain a rolling boil for the entire processing time.
Cool Down Time
When processing time is completed turn off the heat.
Remove the canner lid and wait 5 minutes.
Raise the jars out of the water and remove your jars. (optionally you can wait another 5 minutes if the contents appear to be bubbling so hard it is coming out of the jars)
Put the jars a few inches apart on a thick towel and allow them to cool to room temperature undisturbed. 12 hours is suggested.
When the jars are cooled, remove the metal bands, check the seals, wash jars, dry completely, and store in a cool dark place.