Slow-Simmered Southern Vietnamese Beef Noodle Soup

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A fragrant, richly spiced bowl of beef noodle soup with tender meat and fresh herbs that captures the comforting essence of Southern Vietnam. This vietnamese-inspired soups ready in about 235 minutes pairs beef brisket, beef bones, large, halved onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 40 min Cook: 195 min Serves 4 Vietnamese cuisine 420 cal/serving
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Ingredients

Instructions

  1. Step 1: In a large stockpot, add 2 lbs beef bones, 1 lb beef brisket, 1 large halved onion, 2-inch smashed ginger, 3 star anise, 1 cinnamon stick, and 4 whole cloves. Pour in 12 cups water and bring to a boil over high heat.
  2. Step 2: Lower heat to a gentle simmer and cook uncovered for 3 hours, skimming off any foam and impurities every 30 minutes to keep broth clear.
  3. Step 3: After 3 hours, remove beef brisket and bones. Set brisket aside to cool, then thinly slice. Strain broth through a fine sieve back into the pot.
  4. Step 4: Add 1/4 cup fish sauce and 1 tbsp rock sugar to the broth. Simmer gently for 15 minutes and season with salt to taste.
  5. Step 5: Soak 8 oz rice noodles in warm water for 30 minutes, then drain. Blanch noodles in boiling water for 1 minute until soft but still firm, then drain.
  6. Step 6: Divide noodles among 4 bowls. Top with sliced brisket, 1 cup bean sprouts, 1/2 cup Thai basil leaves, 1/4 cup cilantro leaves, 1/4 cup sliced green onions, and thinly sliced red chili.
  7. Step 7: Ladle hot broth over noodles and garnish each bowl with a lime wedge for squeezing just before eating.

Equipment for this recipe

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Frequently asked questions

How long does Slow-Simmered Southern Vietnamese Beef Noodle Soup take to make?

Total time is about 235 minutes (40 min prep + 195 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Slow-Simmered Southern Vietnamese Beef Noodle Soup?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep beef brisket from drying out.

Can I substitute ingredients in Slow-Simmered Southern Vietnamese Beef Noodle Soup?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Slow-Simmered Southern Vietnamese Beef Noodle Soup for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Slow-Simmered Southern Vietnamese Beef Noodle Soup?

Vietnamese soups like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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