Aunt Pat's Peach Jam

John likes Aunt Pat's jam, because it is blended and not chunky at all. Here's her recipe - makes 6 half pints.

4 cups chopped peaches, blend in blender until smoothie consistency
1/4 c. lemon juice
1 package pectin
Cook until boiling hard, stirring constantly.

6 cups sugar
Add all at once and boil hard for 1 minute, stirring constantly.