According to my personal experience, the bones must be scalded with boiling water for 5- 10 minutes before cooking, then washed off with cold water, and cooked with enough cold water again. Put two slices of onion, ginger and garlic in the soup, and you can also put your favorite Chinese herbal medicines, such as Radix Adenophorae, Radix Astragali, Radix Angelicae Sinensis, Radix Codonopsis, Fructus Lycii and Fructus Jujubae. Then cover the pot and stew until the soup boils, and stew for about 1.5 hours. Finally, put salt instead of monosodium glutamate.
It is recommended to use mineral water for soup, which will be more delicious.