Working in batches, toss the peaches in a food processor or blender, and blend until smooth.
Pour peach puree into a heavy-bottomed stock pot, and stir in spices. Simmer uncovered over medium-low heat, stirring frequently, for about 60 minutes or until thickened into a fine paste.
Blend until smooth with an immersion blender, pour into pint-sized mason jars and refrigerate or can using the water bath method.