The authentic recipe of tomato beef soup is. Take a piece of cooked beef and cut it into small pieces, then put it in the pot and cook it again. Add various seasonings. The soup adds more flavor. Wash the tomatoes and cut into small pieces. Add to the simmered beef broth. After boiling for a period of time. So that the tomatoes are fully integrated into the soup. Sprinkle with chopped coriander. The tomato beef soup cooked in this way is very flavorful, very authentic, and very delicious.