There may be bone powder on the cross section of the bone.
Wash it well under running water

Soak in cold water for more than 6 hours to drain the blood.
Change the water 3 to 4 times
Drain the blood.

Pour water into the pot and soak the beef leg, mixed bones, and Maguri bones
When the water starts to boil, about 5 minutes
After boiling it, throw away the water that first boiled
Wash the bones clean again with water.

Put the washed beef bone in the pot
I'll add water so that it's
Cover over high heat and simmer.
simmer for more than an hour
When the soup decreases, add hot water and bring to a boil it.
Remove any oil that has been floating in between.

When the soup is white, transfer the soup separately to another bowl.
Then, I'll pour water again
In the same way, simmer over high heat until the soup is white.
If the water decreases again this time, add hot water and boil it.
When the white broth comes out
Mix it with the first beef bone broth and store it together.

In the same way, cover it four to five times.
Beef bone is made of milky milky white soup from the second to third.
So you can't just give it up and throw it away.
I think I boil it for about 4 to 5 hours every time I boil it.
The heat is also boiled over high heat, and it gets very thick and thick over medium heat and low heat.
How to cook beef bone soup
It's a food that you have to cook with care for a long time.

The beef bone broth that's been collected 4 to 5 times
If you put it in a refrigerator or cool place, the oil will harden on the top.
Then you just have to remove the oil from the top.

Beef bone soup is complete ^^
Chop the green onions and put it in
Serve with salt and pepper to suit your taste.
You can also add boiled noodles.