Get chicken wings. If it is whole wings then cut a wing at a joint and make it to two pieces. Cook both side of wings in a pan till both side is brown.
Once both side of wings are browned nicely, transfer wings to a pot. Add chopped ginger and chopped hot chili peppers, followed by water and let it boil once. Then add sugar, mirin (味醂, Japanese sweet cooking rice wine), and soy sauce.
Let it simmer for least 1.5 hrs., till chicken get brown color from simmering liquid. Let the lid on a pot loose, and let liquid evaporate slowly to concentrate the flavor.
Finish! Once finished meat on wings are so tender that meat will easily come off the bones. That is so nice about this dish, you can actually eat with chop sticks because meat will come off that easily. Do not have to eat like fired chicken.