Classic Polish Sunday rosół with a twist: the whole chicken and vegetables are roasted first for a deeper, richer golden broth.
Make-ahead: Cut and salt the chicken and prep the vegetables the night before. Refrigerate the chicken uncovered for crispier, browner skin.
Extra body: Roast the heart and gizzard along with the backbone, neck and wing tips. Leave out the liver, since it makes the broth bitter and cloudy.
For the clearest broth: Don’t stir while it simmers, and keep it at a bare simmer the whole time.
Celery root option: Swap the celery ribs for ½ celeriac, peeled and quartered.
Storage: Store the broth, chicken and noodles separately. The broth keeps 5 days in the fridge or 3 months in the freezer.