1. Cut the beef and soak it in tap water for 3-4 hours. Change the water several times.
2. Boil a pot of boiling water, add a little rice wine (white wine is OK), pour in the beef, turn it on again, turn off the fire, take out the beef, put the tap water to rinse (rinse is OK), and wash the blood dregs on the meat.
3. Put the beef into the pot, add water, add onion and beat ginger. Turn the heat to a small one and simmer.
4. When the beef is almost rotten, remove the onion, add the salt, add the tomato (if you like the heavy taste, add the tomato earlier), and if you have more tomatoes, you can make the soup red and bright.
5. Stew until the tomato is a little rotten, the color of the soup is red, you can add potatoes and lotus white, stew until the potatoes are ripe, add chicken essence and a little pepper.