Prepare boiling water canner. Heat jars in simmering water until ready to use, do not boil. Wash lids in warm soapy water and set aside with bands. Place peaches in a wide heavy bottomed saucepan. Use a potato masher to gently break peaches down.

Combine all ingredients, except toasted almonds, in saucepan and bring to a boil over medium heat. Stir jam frequently until it thickens and reaches gelling point (220°), about 15-20 minutes. Stir in toasted almonds.

Ladle hot jam into a hot jar leaving a 1/4 inch headspace. Remove air bubbles. Wipe jar rim. Center lid on jar and apply band, adjust to fingertip tight. Place jar in boiling water canner. Repeat until all jars are filled.

Process jars 10 minutes, adjusting for altitude. Turn off heat, remove lid, let jars stand 5 minutes. Remove jars and cool 12-24 hours. Check lids for seal, they should not flex when center is pressed.