Wash the chestnuts thoroughly and boil them, then remove the shells.
Soak chickpeas in water, then boil them.
Blend boiled chestnuts, chickpeas, and water in a blender until smooth.
Add chestnuts, chickpeas, sugar, agar powder, and salt to a pan, then heat and cook.
Pour the chestnut jelly mixture into a mold and let it cool.