1

Half a roast duck bone fell into a small soup pot.

2

Cut the onion into pieces for later use.

three

Put the onion in the soup pot, add water, bring it to a boil, and turn to low heat to stew the soup.

four

Stew for about 30 minutes. When the soup turns white, add salt.

five

Serve a small bowl of duck soup and sprinkle a little chopped green onion. A bowl of delicious old duck soup is ready.