Boil the peach slices and then lower the heat.Let the fruit simmer for 2 minutes or so until very soft.Remove the pan from the heat and leave it to cool for 30 minutes.Use a blender or food processor to puree the peaches.Use the peach puree within the same day, refrigerate up to 24 hours, or freeze it for up to a month.Fill blender halfway with ice cubes.Add rum, coconut cream, coconut milk and pineapple chunks.Puree until well blended and no chunks of ice remain.Pour piña colada mixture into glasses â…“ of the way up, fill the next â…“ up with with peach puree, and top off the final â…“ of the glasses with the rest of the piña colada mixture. Garnish with fresh fruit or little umbrellas, if desired, and serve immediately for best results. Enjoy!