Add the peaches and lemon juice to a pot.

Bring to a boil over medium heat.

Use a potato masher to mash the peaches.

Add the sugar and bring back to a boil, stirring frequently.

Cook for 25-30 minutes or until the peaches reach the desired consistency.

Ladler into sterilized jars and seal immediately. 

Store in a cool dark place and refrigerate once opened.