This method has you juice the cranberries first, and then can the extracted juice. This is more work up front, but you don't have to strain the juice before using. Use this method for unsweetened cranberry juice, as the 2nd method only works if you add sugar.
Add 3 lbs cranberries (four 12 oz bags) to a large stock pot, along with 4 quarts of water. Bring the pot to a boil, and then simmer for 5-10 minutes until the cranberries pop.
Strain the cranberries through a double layer of cheesecloth, or a jelly bag, for about 30 minutes. Collect the juice.
Return the cranberry pulp to the stock pot, add two more quarts of water and bring it back to a simmer for 5 minutes. Strain agin for 10-15 minutes.
Return the pulp to the pan a 3rd time with 1 final quart of water. Return to a simmer for 5 minutes, stirring to extract the last bits of juice.
Strain one final time, and discard the pulp.
Prepare a water bath canner and jars. Bring the canner to a simmer (around 180 degrees).
Return the juice to a clean stock pot and warm it to just barely simmering (180 to 190 degrees F). Do not boil!
Add sugar to taste, if you choose. I'd suggest around 1 3/4 cup for tart juice, or up to 3 1/2 cups for sweet juice. Omit the sugar for sugar free juice. Stir to dissolve the sugar, but don't overcook (or it'll become jelly).
Ladle the juice into prepared canning jars, leaving 1/4 inch headspace. Seal with 2 part canning and load into the canner.
Return the canner to a hard boil and process jars (pints and quarts) for 10 minutes below 1,000 feet in elevation. Increase time to 15 minutes if over 1,000 feet.
Remove jars to cool on a towel on the counter and check seals after 24 hours. Store any unsealed jars in the refrigerator for immediate use. Sealed jars can be kept in the pantry for 12-18 months. Remove rings before storing.
Canning Cranberries for Juice
This method has you raw pack cranberries and sugar, then cover with boiling water. It's less work up front, but you'll need to wait 4-6 weeks for the jucie to slowly extract on the pantry shelf before drinking. It only works if you add sugar, as the sugar in the water is what helps draw the juice from the berries.
Most people use this method, as it's quick to get in the canner, and straining is easy when you want to drink the juice. It also yields a nicely sweetened juice that's perfect over ice.
Load 1 1/2 to 1 3/4 cups of raw cranberries into each quart jar. Add 1/4 to 1/2 cup sugar to each jar.
Prepare a water bath canner, bringing the canner up to a simmer (around 180 degrees F).
Bring a kettle of water to a boil and pour boiling water over the cranberries and sugar in the jars, leaving 1/2 inch headspace.
Seal with 2 part canning lids and load into the canner.
Return the canner to a full rolling boil and then start the timer. Process jars for 25 minutes (under 1,000 feet in elevation). Increase time to 30 minutes for 1,000 to 6,000 feet, and process for 35 minutes over 6,000 feet in elevation.
Remove jars from the canner and allow to cool on a towel on the counter. After 24 hours, check seals. Store any unsealed jars in the refrigerator. Sealed jars will keep on the pantry shelf for 12-18 months. Allow 4-6 weeks for the berries to infuse before drinking.
Important note: The canning time is much longer with this method because there are solids in the jars (rather than juice juice). Be sure to process the jars at a full rolling boil for the prescribed time for your altitude. Also note that the headspace is 1/2 inch with berries, but only 1/4 inch with just juice.
Notes
Be sure to check seals before storing jars in the pantry. Properly canned and sealed jars should maintain quality on the pantry shelf for 12-18 months.Using the extracted juice method, you can drink the juice immediately. With the whole berry method, be sure to wait 4-6 weeks for the juice to extract. Strain when drinking.SugarThe amount of sugar added is up to your personal taste. About 1/2 cup per quart yields a sweet juice that's perfect for drinking as is (3 1/2 cups ber batch). If you like a tart juice, I'd suggest 1/4 cup per quart (1 3/4 cups per batch).To make a sugar free canned cranberry juice, use the extracted juice method and then omit the sugar. If using the whole berry method, you must add at least 1/4 cup of sugar per quart to help extract the juice in the jars.