In a very large pot, mixed fruit, pectin, citric acid, and salt.
Set pot over high heat and stir constantly until mixture comes to a rolling boil.
Add sugar all at once and continue stirring constantly until mixture comes to another rolling boil.
Boil hard for one minute.
Ladle into sterilized jars and then process for 10 minutes.
Keep a few unprocessed jars in the refrigerator. They will be fine for several months (unprocessed jam has a fresher flavor than the processed jam).
