Place the peaches into a medium to large pot.
Set the stove to a medium heat and slowly bring to a boil.
Cook the peaches for 20 minutes. They will become more than a bit liquidy.
Turn off the heat and stir in the sugar.
Stir in the pectin slowly, bring the mixture to a boil, and hold it there for about 60 seconds.
Pour the peach preserves into Mason jars, attach the lids and rings.
Water bath can the peach preserves for 10 minutes.