Tortellini in brodo is the most sacred dish of Bologna and Modena — a Christmas tradition, a point of civic identity, and a technique that separates competent cooks from masters. The tortellino is a small filled pasta, roughly 2-3cm when formed, traditionally said to be inspired by Venus's navel (the legend involves an innkeeper peering through a keyhole). The filling, deposited with the Bologna Chamber of Commerce in 1974 by the Dotta Confraternita del Tortellino, contains prosciutto crudo, mortadella di Bologna, Parmigiano-Reggiano, egg, and nutmeg, with pork loin often included — though every family insists their precise ratio is the correct one. The sfoglia must be rolled extremely thin — thinner than for tagliatelle — because the folding creates multiple layers at the edges. Each tortellino is formed from a small square of pasta (roughly 3cm x 3cm), a tiny amount of filling placed in the centre, the square folded into a triangle, and the two bottom corners pinched together around the fingertip. Speed matters: a skilled tortellaia can form over 100 per minute. The only correct way to serve tortellini in Bologna is in brodo — capon broth, sometimes a blend of capon and beef, of crystalline clarity and deep golden colour. The broth is as important as the pasta. Tortellini alla panna (with cream) exists but is considered a lesser preparation by purists. Tortellini in any other sauce is an abomination to traditional Bolognese sensibility.
Roll sfoglia extremely thin — thinner than for tagliatelle — the multiple layers from folding must not become doughy|Cut into 3cm x 3cm squares (some families use circles, but squares are canonical)|Place a very small amount of filling in the centre — overfilling prevents proper sealing|Fold into a triangle, pressing to seal and expel air|Wrap around the fingertip, pinching the two bottom corners together — the shape should resemble a navel|Work quickly — the sfoglia dries and cracks if left exposed|The brodo must be made from capon (or capon and beef), skimmed to clarity, golden and rich|Serve in brodo only — the tortellini float when cooked, roughly 2-3 minutes in simmering broth
The filling must be prepared a day ahead and refrigerated — this allows the flavours to marry and the texture to firm, making it easier to portion. The precise ratio of prosciutto to mortadella is the subject of lifelong family disputes in Bologna; there is no single correct answer, only your family's answer. When forming, the fingertip-wrap must be tight enough to hold but gentle enough not to tear the pasta. The brodo should be started 4-6 hours before service with a whole capon, onion, carrot, celery, and a few parsley stems. Test one tortellino in the broth before committing the full batch — if the filling is too salty, adjust by diluting broth slightly. The ideal serving is 15-20 tortellini per bowl of brodo. Count them. This dish is measured in pieces.
Making tortellini too large — these are not tortelloni; each should be roughly thumbnail-sized when formed. Using thick sfoglia — creates a doughy, heavy result where filling is lost inside pasta walls. Overfilling — the seal fails and the filling leaks into the broth, ruining both. Using chicken stock from a box instead of real capon broth — the broth IS half the dish. Serving in cream sauce as the primary presentation — this exists but is not the canonical preparation. Freezing tortellini improperly — they must be frozen in a single layer before bagging or they stick together and tear.
Dotta Confraternita del Tortellino — official filling recipe deposited 1974; Ada Boni, Il Talismano della Felicità (1927); Pellegrino Artusi, La Scienza in Cucina (1891); Anna Gosetti della Salda, Le Ricette Regionali Italiane (1967)