Breadcrumb, egg, and Parmigiano strands extruded directly into clear broth are Romagna's soul food. This light yet protein-packed mediterranean soup fits beautifully into 1200 calorie or bariatric meal plans.
In a large mixing bowl, whisk the eggs until smooth, then fold in the finely grated Parmigiano-Reggiano and fresh breadcrumbs using a spatula.
Add the lemon zest, nutmeg, black pepper, and kosher salt to the mixture; knead gently with your hands until a soft dough forms—let it rest, covered, for 15 minutes at room temperature.
Meanwhile, bring the chicken broth to a gentle simmer in a wide, deep saucepan over medium-low heat for even temperature control.
Fill a potato ricer or passatelli press with the dough and extrude 2-inch strands directly into the simmering broth, working in batches to avoid crowding; maintain a gentle simmer, not a rapid boil.
Cook the passatelli strands for 2–3 minutes, or just until they float to the surface and swell slightly; serve immediately in warm bowls with extra broth ladled over.