2.3 kg beef soup bones
15 ml salt, divided
7.6 liters water
2 medium onions, quartered
1 (10 cm) piece fresh ginger root
900 g beef oxtail
1 white (daikon) radish, sliced
56 g whole star anise pods
1.25 (8 cm) cinnamon stick
5 ml black peppercorns
2 whole cloves
15 ml white sugar
15 ml fish sauce
salt to taste
680 g dried flat rice noodles
225 g frozen beef sirloin
Step 1
Prepare the broth by placing beef bones in a large pot, seasoning with 5 ml salt, and adding water. Bring to a boil, then simmer for about 2 hours.
Step 2
Meanwhile, preheat the oven's broiler and line a roasting pan with foil. Char the onions and ginger under the broiler for 10 to 15 minutes, then chop the onions and slice the ginger.
Step 3
Skim the fat from the simmering broth, then add oxtail, radish, charred onions, and a bouquet garni made from the ginger, anise, cinnamon stick, peppercorns, and cloves tied in cheesecloth. Stir in sugar, fish sauce, and the remaining 10 ml salt. Simmer for at least 4 hours, then season with salt.
Step 4
Strain the broth, discard the bones and bouquet garni, and chill the broth in the refrigerator for 8 hours to overnight. Skim and discard the fat, bring the broth to a boil, then reduce heat to keep it hot until ready to serve.
Step 5
Boil a pot of water and stir in the rice noodles. Let sit for 6 to 10 minutes until tender but chewy. Cut the frozen sirloin into thin slices.
Step 6
Drain and divide the noodles among serving bowls, about 350 ml per serving. Top each with a few sirloin slices. Ladle the hot broth over the sirloin and noodles.
Step 7
Serve hot and enjoy!