Vietnamese Beef Marrow Broth

Steps

1. 1

   Toast the spices

   • In a small dry skillet over medium-low heat, add the star anise, cinnamon, coriander seeds, and cloves.
   • Toast for 1–2 minutes, stirring occasionally, until fragrant—do not allow them to darken or burn.
   • Transfer to a plate.

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   Ready when: Spices smell fragrant and toasted, not acrid

   Tip: Avoid overtoasting; charred spices will taste bitter. If you smell anything sharp or burnt, remove immediately.

2. 2

   Char the aromatics

   • Heat a large heavy-bottomed pot (8 quarts) over high heat for 2 minutes.
   • Once very hot, place the shallot halves and ginger halves cut-side down directly on the dry pot bottom (no oil).
   • Char for 3–4 minutes without moving them until blackened in spots.
   • Flip the aromatics and char the other side for 2 minutes.
   • The ginger skin should be singed and the shallots caramelized.
   • Remove and set aside.

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   Ready when: Shallots and ginger are blackened on both flat sides

   Tip: The charring adds smoky depth. Don't skip it or move the aromatics—they need direct contact with the hot pot to develop color and flavor.

3. 3

   Blanch and rinse the bones

   • Return the pot to high heat and add the cold water.
   • Once it reaches a boil, carefully add the beef bones.
   • Return to a boil, then immediately pour everything through a fine-mesh strainer.
   • Rinse the bones under cold water and wipe out the pot to remove scum.
   • This step removes impurities and keeps the broth clear.

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   Ready when: Water boils vigorously and bones are opaque on the surface

   Tip: Don't skip the blanch and rinse—it's crucial for a clean, clear broth. Scum left in the pot clouds the final result.

4. 4

   Build the broth base

   • Return the cleaned bones to the pot along with the charred shallots, charred ginger, quartered onion, and toasted spices.
   • Pour in 10 cups (2.4 L) of fresh cold water.
   • Bring to a boil over high heat, then reduce to low and maintain a gentle simmer—you should see only small, occasional bubbles rising to the surface, never a rolling boil.

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   Ready when: Water reaches a rolling boil

   Tip: Once it boils, lower the heat immediately. A vigorous boil emulsifies fat and proteins into the broth, making it cloudy. A gentle simmer keeps it clean and clear.

5. 5

   Skim the impurities

   • In the first 10 minutes of simmering, white foam and gray impurities will rise to the surface.
   • Use a large shallow spoon or skimmer to remove them every 2–3 minutes.
   • Stop skimming once the surface is mostly clear and the impurities have largely subsided.
   • This step ensures clarity and cleanliness.

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   Ready when: Surface is mostly clear with no thick foam layer

   Tip: Skimming is important but don't obsess—a few minutes of occasional skimming is enough. Don't skim so aggressively that you cool the broth.

6. 6

   Simmer the broth

   • Maintain a gentle simmer over low heat for 2.5 to 3 hours.
   • The bones should remain submerged.
   • During the final 30 minutes of simmering, you can stir in the fish sauce, rock sugar, and a pinch of salt if you wish (optional—you can also season to taste at the end).
   • The longer the bones simmer, the richer and more gelatinous the broth will become as the marrow dissolves into the liquid.

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   Ready when: Broth is rich, amber-colored, and slightly gelatinous when cooled; bones are tender and marrow can be easily scooped out

   Tip: Check the pot occasionally to ensure the broth is at a bare simmer, not boiling. If it boils, the broth will become cloudy. The marrow bones should fall apart easily when squeezed—if they're still very firm, simmer a bit longer.

7. 7

   Strain and cool

   • Remove the pot from heat and let it settle for 5 minutes.
   • Place a fine-mesh strainer lined with cheesecloth over a large clean pot or bowl.
   • Carefully pour the broth through the strainer, discarding the bones and aromatics.
   • (Save any marrow from the bones if you wish—it can be spooned out and saved for serving.) Allow the broth to cool at room temperature for 15 minutes, then refrigerate if using later.

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   Ready when: Broth is clear and free of solids; a thin layer of fat may solidify on top when chilled

   Tip: Line your strainer with cheesecloth to catch any remaining fine particles. Don't press on the solids—let gravity do the work for a clearer broth.