Grind fruit in a food processor or a grinder and place in a large kettle. Add sugar. Bring to a full rolling boil; boil for 1 minute. Stir in pectin; return to a full rolling boil. Boil for 1 minute, stirring constantly. Remove from heat, let cool for 5 minutes (skim off foam).

Pour into hot jars leaving 1/4 in head space. Adjust caps. Process for 15 minutes in a boiling water bath.

This recipe yields 14 half-pints.