One of my most favorite recipes to use all of the fresh fruit we pick during the summer.
If jarring, prepare jars and lids by sterilizing
Bring a large pot of water to a boil. Fill a large both with ice water. Cut shallow X into the bottom of each peach and drop into boiling water for 30 seconds than immediately into ice bath. Peel and chop peaches, then into the blender until pureed. Should make 4 cups
Transfer to large heavy bottomed pot, lemon juice, bourbon, cinnamon, vanilla, and butter.
Bring to roiling boil. Add Pectin and return to boil, then add sugar and get to 220 degrees if possible remove from heat. Use the frozen plate method to test for firmness (place a plate in the freezer, then take a small amount of jam onto the plate. After one minute you should have setting going on. If you run your finger through it it should stay set. If not keep cooking.
Skim any foam and remove vanilla bean and cinnamon stick
Ladle jam into jars leaving 1/4 inch head space. Place lids on jars, cover and boil for 10 min. Remove from heat and let jars be in pot for 5 minutes. Then remove and leave on counter top for six hour or overnight.