A reliable, traditional sweet cherry jam recipe designed for safe water-bath canning. Yielding exactly 8 half-pint jars, this quick-boil method uses powdered pectin to achieve a gorgeous, glossy set that preserves the brilliant ruby color and rich flavor of fresh sweet cherries.
Prepare Jars: Submerge your clean jars in a water bath canner and hold at a gentle simmer. Wash lids and bands in warm, soapy water.
Boil the Fruit: In your large pot, stir together the chopped cherries, lemon juice, and powdered pectin. Bring to a full boil over high heat, stirring constantly.
Add Sugar: Stir in the sugar all at once. Return the pot to a full rolling boil that cannot be stirred down. Boil hard for exactly 1 minute, stirring continuously. Remove from heat and skim off any surface foam.
Jar and Seal: Ladle hot jam into hot jars, leaving ¼-inch headspace. Wipe rims clean, apply lids, and screw bands to fingertip-tight.
Process: Lower jars into the boiling canner. Ensure water covers lids by 1 inch. Process at a full boil for 10 minutes. Remove carefully and let cool on a towel for 24 hours. Check seals before storing.