This bold and aromatic beef noodle soup from Hue, Vietnam, is deeply flavored with lemongrass, shrimp paste, and spicy chili oil. Rich bone broth, tender meats, and thick round noodles come together in a bowl that’s complex, comforting, and irresistibly spicy.
For the broth:
2 pounds pork bones
2 pounds beef brisket
7 quarts water
1 large white onion
Spices:
1 piece ginger (2×2 inches), sliced
2 stalks lemongrass, smashed and cut into 3-inch pieces
5 garlic cloves
1 cinnamon stick
5 whole cloves
Oil infusion:
¼ cup pure sesame oil
1 tablespoon annatto seeds
5 medium shallots, minced
5 garlic cloves, minced
Seasoning mix:
2 tablespoons sesame oil
2 teaspoons red pepper flakes
3 tablespoons minced lemongrass
2 tablespoons shrimp paste
2 tablespoons chicken bouillon
1 tablespoon Kosher salt
2 tablespoons fish sauce
Soup add-ins:
1 medium white onion, thinly sliced
5 stalks green onion, chopped
1 pound beef tenderloin, thinly sliced
1 bag Hue-style round rice noodles
Fresh accompaniments:
Shredded water spinach
Shredded banana flower
Beansprouts
Fresh oregano (kinh giới)
Lime wedges
Shredded red cabbage, optional
Dipping sauce:
2 tablespoons fish sauce
3 slices Thai chili
1 tablespoon shrimp paste
Boil pork bones for 10 minutes. Drain and rinse. Repeat with brisket. Set both aside.
Toast ginger, garlic, cinnamon stick, cloves, and lemongrass until aromatic. Tie the cinnamon and lemongrass in a bundle, place remaining spices in a sachet.
In a large stockpot, boil 7 quarts of water. Add cleaned pork bones and brisket. Bring back to a boil.
Add the spice sachet and tied bundle. Simmer for 45 minutes. Then add the large white onion and simmer for another 45 minutes, skimming off impurities regularly.
In a small pan, heat sesame oil with annatto seeds for 5 minutes to extract color. Strain the oil, then sauté minced shallots and garlic in the oil for 3 to 4 minutes. Set aside.
In the same pan, heat additional sesame oil and sauté red pepper flakes, minced lemongrass, and shrimp paste for 3 to 4 minutes. Set aside.
In a small bowl, combine fish sauce, bouillon, and salt with ½ cup hot broth to dissolve.
Remove brisket from the broth and thinly slice. Discard all solids from broth. Add 8 cups hot water to dilute. Return to a simmer. Add both oil and seasoning mixtures. Simmer for 20 minutes.
Keep the broth warm. Blanch beef tenderloin slices briefly. Cook noodles per package instructions and rinse.
Assemble each bowl with noodles, sliced brisket, raw tenderloin, sliced white onion, and chopped green onions. Ladle hot broth over the top to cook the tenderloin.
Serve immediately with the fresh vegetable plate and dipping sauce on the side.
Use Hue-style round rice noodles for authentic texture.
Annatto seeds give the broth its signature orange-red hue.
Shrimp paste is essential for umami depth—don’t skip it.
Make ahead by preparing the broth and toppings a day in advance and assembling bowls to order.