Canning method
Sterilize canning jars and prepare two-piece canning lids according to manufacturer s directions. To prepare fruit. Sort and wash fully ripe cherries; remove any stems and pits. Grind cherries or chop fine. To make jam. Measure prepared cherries into a kettle. Add pectin and stir well.
Place on high heat and, stirring constantly, bring quickly to a full boil with bubbles over the entire surface. Add sugar, continue stirring and heat again to full bubbling boil. Boil hard for 1 minute, stirring constantly.
Remove from heat; skim Fill hot jam immediately into hot, sterile jars, leaving 1/4 inch headspace. Wipe rims of jars with a dampened clean paper towel; adjust two-piece metal canning lids. Process in a Boiling Water Canner .
Processing: Process Hot, Half-pints or Pints, boiling-water canner, 0 - 1,000 ft - 5 minutes.
Altitude-adjusted processing table: Table 1. Recommended process time for Cherry Jam in a boiling water canner. / Process Time at Elevations of / Style of Pack - Jar Size - 0 - 1,000 ft - 1,001 - 6,000 ft - Above 6,000 ft / Hot - Half-pints / / or Pints - 5 min - 10 - 15