Milky Beef Bone Calcium Soup
1.
Chop beef bones and wash them, put them in a pot, add water to the highest water level, add green onions, ginger slices, and cooking wine.
2.
Skim off the floating powder when the soup is about to boil, add a small spoon of vinegar, close the lid, and cook for 4 hours
3.
Add a little salt and pure milk and mix well
Tips:
You can also use a rice cooker