Collagen Rich Chicken Bone Soup

• 1 kg Chicken bones
• 1 stalk Leek (Green part)
• 2 1/2 3 litres Water

1. Wash the chicken bones well and remove the innards and fat.
2. Boil the bones for 2 - 3 minutes, then drain the water.
3. Wash the pan clean, quickly wash the bones and boil it once again.
4. When you've removed most of the scum, go to Step 3.
5. After cooking in the pressure cooker for 30 minutes, let it cool down naturally, and add the leek.
6. Cook for another 30 minutes and let it cool down naturally once more.
7. Strain the soup through a sieve, then strain it once more through a paper towel.
8. Then it's done.
9. If you don't have a pressure cooker, let it simmer slowly, adding water as you go.

chicken, stalk, water

Taken from cookpad.com/us/recipes/168072-collagen-rich-chicken-bone-soup (may not work)