Step 1: Prepare the Aromatics : Char onion and ginger until blackened for smoky flavor. This step gives the broth its signature aroma and color.
Step 2: Parboil the Bones : Boil bones and brisket briefly, then rinse to remove impurities and ensure a clear broth.
Step 3: Simmer the Broth : Add the bones, beef, charred aromatics, spices, fish sauce, sugar, and salt. Simmer gently for 3 hours, skimming occasionally for clarity.
Step 4: Strain and Slice : Remove the brisket and slice it thinly. Strain the broth to remove solids, leaving a clear, golden liquid.
Step 5: Prepare the Noodles ; Cook rice noodles in boiling water for 4–5 minutes until tender, then rinse and drain.
Step 6: Assemble the Pho : Place noodles in bowls, add brisket and raw beef slices. Pour boiling-hot broth directly over the meat to cook it instantly.
Step 7: Garnish and Serve : Top with onions, green onions, and herbs. Serve with lime, bean sprouts, basil, and chili for customization.