Ingredients
Equipment
Method
Make the broth
- Place the beef soup bones in an 8-quart stockpot, add 5 qt cold water for blanching, and bring to a boil over high heat; boil for 10 minutes.
- Drain and rinse the bones, then wash the pot.
- Heat the broiler to high and arrange the halved yellow onions and halved fresh ginger on a foil-lined rimmed baking sheet.
- Broil for 8-12 minutes, turning once, until charred in spots.
- Toast the cinnamon sticks, whole star anise, coriander seeds, fennel seeds, and whole cloves in a dry skillet over medium heat for 2-3 minutes, until fragrant.
- Return the bones to the stockpot and add the remaining 5 qt cold water, trimmed beef brisket, charred onions and ginger, and toasted spices.
- Bring to a boil, skim off foam, and reduce to a gentle simmer.
- Simmer uncovered for 2 1/2-3 hours, until the brisket is fork-tender.
- Transfer the brisket to an oven-safe dish.
- Cover tightly with foil and keep warm in a 200°F oven while the bones simmer for another 1 1/2-2 hours.
- Strain the broth through a fine-mesh strainer into a clean pot and discard the solids.
- Stir in the kosher salt, fish sauce, and granulated sugar, then simmer for 5 minutes.
Prepare the bowls
- Cook the dried flat rice noodles according to the package directions until tender.
- Drain the noodles and divide them among six large soup bowls.
- Slice the warm brisket thinly across the grain and divide it among the bowls.
- Slice the trimmed beef sirloin across the grain into 1/4-inch-thick strips.
- Bring the broth to a boil, then cook the sirloin in batches at a steady simmer for 1-2 minutes, until the strips reach 145°F.
- Transfer each batch to a clean plate and rest for 3 minutes.
- Divide the sirloin among the bowls, add the thinly sliced green onions and fresh cilantro leaves, and ladle about 2 cups hot broth into each bowl.
- Serve with the fresh Thai basil leaves, bean sprouts, lime wedges, thinly sliced jalapeño, hoisin sauce, and Sriracha.
Notes
For the clearest broth, skim the foam as it forms and slice the sirloin thinly across the grain. Refrigerate broth and toppings separately for up to 3 days; the broth freezes well, but assembled bowls do not. For a gluten-free serving, use certified gluten-free hoisin sauce.
