Choose firm, juicy cherries like Bing, Rainier, or Montmorency with the ideal color for the type. Make sure the cherries are sweet and ripe before canning; avoid overripe or underripe fruits for the best results.
Either pit or leave the cherries whole. You can use a pitter or the paperclip method to remove the pits. Dip pitted cherries in lemon juice and water to prevent discoloration. If you're not planning to pit the cherries, prick the skins with a clean needle to prevent discoloration.
Prepare your syrup by adding 3 ½ cups of water, syrup, apple juice or white grape juice to a stockpot and bringing it to a low simmer. Add the blanched cherries for the hot pack method. Bring to a boil, simmer, then load into the jars.
For the raw pack method, pack the jars with raw cherries, then pour the liquid over the jars.
Check for ½" headspace. Wipe the jar rims, then add the lids and bands. Tighten fingertips tight.
Water bath hot-packed quarts for 20 mins, raw-packed quarts for 25 mins; pressure can at 6 lbs pressure for 10 mins or 5 lbs for weighted-gauge.
For a pressure canner, allow the canner to pressure, then remove the jars. The jars can be removed from the water bath canner as soon as the canning time has finished. Let the jars rest for 24 hours, check the seals, label, and store. See guidance in the article for elevations above 1,000 feet.