Char the Aromatics: Char the ginger and yellow onion directly over a gas flame or hot burner until lightly blackened.
Toast the Spices: Dry-toast all pho spices in a pan over low-medium heat until fragrant. Transfer to a tea bag or spice sachet.
Build the Broth: Add turkey bones/carcass to a pot with charred aromatics, spice sachet, pho cubes, rock sugar, and a pinch of salt. Bring to a gentle simmer—never a rolling boil.
Simmer & Skim: Simmer uncovered for approximately 1 hour. If any scum rises to the top, skim it lightly to maintain a clear broth.
Prep & Slice: Remove turkey breast meat and slice very thin against the grain for the best texture.
Season & Finish: Remove the spice sachet. Season the broth to taste with fish sauce and chicken bouillon, then bring to a final gentle boil.
Assemble: Add cooked rice noodles to a bowl. Top with turkey slices and fresh garnishes. Ladle the hot "liquid gold" over everything and enjoy.