Listing under autumn so I don't forget to make them. Take astringent persimons, peel and boil for 10 seconds in vinegared water. If they don't have a stem, you can use a screw. Keep in a cool (~15°), ventilated area (I'm using our cellar at 50% RH). After 1 week, spray with neutral alcohol and begin massaging them gently every few days (wearing gloves). Takes about 2-5 weeks.