Pavia, Lombardia
Pavia's legendary one-bowl restorative: a raw egg cracked over day-old bread croutons in the bottom of a deep bowl, scalding-hot beef consommé poured over to cook the egg in situ, finished with grated Parmigiano. Said to have been invented in 1525 to revive Francis I of France after the Battle of Pavia. The genius is in the ratio of hot broth to cold egg — the white sets while the yolk remains molten, creating an instant enriched broth that is greater than its parts.
Pure, clean, intensely beefy from the consommé, enriched by the partially-set egg, with the nuttiness of Parmigiano and the buttery depth of fried bread croutons
The broth must be truly boiling — the thermal mass of the liquid must be sufficient to cook the egg white while the yolk stays liquid. Bread must be stale and oven-dried to crouton firmness, not soft — it should absorb broth without disintegrating. The egg must be cracked directly into the bowl without breaking the yolk. Parmigiano added in two stages: into the bowl before the broth, and scattered over after.
For restaurant service, heat the bowl in the oven first so the bowl's residual heat supplements the broth's thermal work on the egg. Use only the finest home-made beef consommé — this dish is a showcase for the broth, nothing else. The canonical bread is fried in butter, not baked — this gives a richer, more flavourful base.
Using stock (not consommé) — the clarity and intensity of proper consommé is what elevates this simple dish. Soft bread that disintegrates loses the textural contrast. Pouring broth too slowly or from too great a height cools it before it sets the egg. Breaking the yolk destroys the intended experience.
La Grande Cucina Lombarda — Ottorino Perna Bozzi