Bring the fire to the boil and simmer for 3 hours. The specific methods are as follows: firstly, prepare materials: bovine bone: 1KG, ginger slice: 5 g, clear water: 3L, astragalus root: 3 g, medlar: 3 g, salt: 3 g, chicken essence: 3 g.

1. Wash the beef bones, then put them in a boiling pot, add a proper amount of ginger slices, blanch them in water, and then take them out for later use.

2. Put the blanched beef bones into the saucepan, add all the ingredients, and then pour in the right amount of water.

3. Cover the lid, simmer for 3 hours after boiling, and add appropriate amount of salt to taste.

4. Use a clean, water-free and oil-free container to hold the stewed beef bone soup.