It is best to choose fat meat and lean meat for beef. There will be a lot of butter in the soup. If you don't like beef, choose lean meat.
Wash the beef and cut it into pieces. Chop the onion into small pieces (it is best to use only scallion), slice the ginger, add some garlic (the whole garlic skin is put in the pot, and the stewed beef tastes better), mince the star anise and cinnamon into small pieces, add a little salt, and stew with the beef in a pressure cooker with water. When the water boils, skim off the foam and simmer for half an hour. The degree of heat will also affect the umami flavor of beef.
Wash, peel and cut tomatoes. A small jar of ketchup is used to color the soup. You can also make soup with only tomato sauce, but the taste is not as good as that with tomato.
Peel potatoes, cut onions into small pieces, stir-fry in oil and put them on a plate for later use. Blanch the sweet potato vermicelli with boiling water and take it out for later use.
Stir-fry chopped green onion and add appropriate amount of red pepper. Stir-fry tomato sauce, then add tomatoes and a little sugar to remove the sour taste.
When the tomatoes are completely fried, add the freshly fried potatoes and onions and stir fry. Then add the beef soup of beef stew to the pot. After the soup is boiled, put everything in the pot into the casserole and start to simmer the soup.
When the soup is completely tasty, the potatoes will not be crisp, then add the sweet potato vermicelli which has been boiled with boiling water before, and add the right amount of salt. The vermicelli can be eaten after it is cooked.