Tender beef and sweet white radish simmer together in a clear, nourishing broth. This high protein, healthy family soup is low calorie and a warming wintertime staple.
Rinse the beef brisket under cold water, then place it in a large pot with 8 cups of water. Bring to a rapid boil over high heat to remove impurities for 3 minutes.
Discard the first boil water, rinse the beef, and refill the pot with 8 cups of fresh water. Add beef, sliced onion, and garlic. Bring back to a gentle boil over medium-high heat.
Once boiling, reduce the heat to low, skim any foam, and simmer uncovered for 60 minutes for maximum beef tenderness.
Peel and cut the white radish into thick bite-sized wedges. After the soup has simmered for 1 hour, add the radish and continue simmering gently for 30 more minutes.
Season the soup with salt, soy sauce, and black pepper. Just before serving, add chopped scallion. Simmer 5 more minutes, taste, and adjust seasoning if needed before serving hot.