We came into Marseille by the old harbour, where the fishermen still sell that morning's catch off trestle tables on the Quai des Belges. Bouillabaisse began here, or close to it, as the meal the men made from what they could not sell. The bony rockfish, too spiny and awkward for the market stall, went into a pot of seawater over a fire on the stones. That is the whole ancestry of a dish you now book a day ahead and pay dearly for.
The name tells you how it is cooked. Bolhabaissa, in Provencal, folds two verbs together, to boil and to lower. You bring it up hard, then you drop the heat. Get that order wrong and the olive oil never binds into the broth.
The fish are the argument. A true bouillabaisse leans on rascasse, the red scorpionfish that lives in the rocks close to shore, ugly and worth the trouble. Around it go conger, sea robin, sometimes John Dory or weever. Marseille cooks will tell you three or four kinds is the floor, and that they must have been alive that morning. The smallest are pounded to nothing to thicken the stock. The ones worth eating are kept back for the plate. Saffron and good oil do the rest, with fennel and a strip of orange peel.
A bowl of orange soup with croutons is not bouillabaisse. It is the souvenir sold under the name.
That confusion is old, and in 1980 eleven Marseille restaurateurs signed a charter against it. The Charte de la Bouillabaisse set down the fish, the method and the order of service. It is less a legal instrument than a line drawn in the sand of the Vieux-Port, and it carries no force of law. It carries something better, the weight of people who would be embarrassed to serve you the wrong thing.
The service is the tell. It arrives in two acts. First the broth alone, deep and rust-coloured, with toasted bread and rouille, the garlic and saffron mayonnaise you smear on and let dissolve into the surface. Then the fish, carried back whole and filleted at the table in front of you. If it all comes in one bowl, you are eating soup and paying for a name.
We took ours at a table that had done this for decades, ordered ahead as the serious rooms ask you to. It is not a light lunch and it is not cheap. It is a city explaining itself on a plate, which is the only kind of meal worth crossing a country for.