Bouillabaisse has part(s) fish
Bouillabaisse (French: [bu.ja.ˈbɛs]; Occitan: bolhabaissa, bullabessa [ˌbuʎaˈβajsɔ / ˌbujaˈbajsɔ]) is a traditional Provençal fish soup originating in the port city of Marseille. The French and English form bouillabaisse comes from the Provençal Occitan word bolhabaissa, a compound that consists of the two verbs bolhir (to boil) and abaissar (to reduce heat, i.e., simmer).
Bouillabaisse was originally a dish made by Marseille fishers, using the bony rockfish which they were unable to sell to restaurants or markets. There are at least three kinds of fish in a traditional bouillabaisse, typically red rascasse (Scorpaena scrofa); sea robin; and European conger. It can also include gilt-head bream, turbot, monkfish, mullet, or European hake.  It usually also includes shellfish and other seafood such as sea urchins, mussels, velvet crabs, spider crab or octopus. More expensive versions may add langoustine (Dublin Bay prawn; Norway lobster), though this was not part of the traditional dish made by Marseille fishers.  Vegetables such as leeks, onions, tomatoes, celery, and potatoes are simmered together with the broth and served with the fish. The broth is traditionally served with a rouille, a mayonnaise made of olive oil, garlic, saffron, and cayenne pepper on grilled slices of bread.
What makes a bouillabaisse different from other fish soups is the selection of Provençal herbs and spices in the broth; the use of bony local Mediterranean fish; the way the fish are added one at a time, and brought to a boil; and the method of serving. In Marseille, the broth is served first in a soup plate with slices of bread and rouille, then the fish is served separately on a large platter  (see image at top);  or, more simply,  as Julia Child suggests, the fish and broth are brought to the table separately and served together in large soup plates.Ingredients
The ingredients of a traditional Marseille bouillabaisse vary depending upon what fish are available that day  and the taste of the chef. These are the typical ingredients used in one of the most traditional Marseille restaurants, the Grand Bar des Goudes on Rue Désirée-Pelleprat:Four kilograms of fish and shellfish, including, on a typical day, grondin (sea robin), Rascasse (Scorpaena scrofa), rouget grondin (red gurnard),  congre (conger eel), baudroie (lotte, or monkfish), Saint-Pierre (John Dory), vive (weever), and  sea urchins.  Other ingredients in the broth include a kilogram of potatoes, seven cloves of garlic, onions, ripe tomatoes, and a cup of olive oil. The broth is seasoned with a bouquet garni, fennel, eight pistils of saffron, salt and Cayenne pepper.
The rouille, a spicy mayonnaise which is spread on thick slices of country bread and floated on the bouillabaisse when served, is made with an egg yolk, two cloves of garlic, a cup of olive oil, and ten pistils of saffron, and is seasoned with salt and Cayenne pepper.History and legend
The dish originates in ancient Greece. The Phoceans, an Ancient Greek people who founded Marseille in 600 BC, ate a simple fish broth  known in Greek as "kakavia". A dish similar to bouillabaisse also appears in Roman mythology: it is the dish that Venus fed to Vulcan.The legend has it that bouillabaisse was created by Marseille fishermen who wanted to make a meal when they returned to port. Rather than using the more expensive fish, they cooked the common rockfish and shellfish that they pulled up with their nets and lines, usually fish that were too bony to serve in restaurants, cooking them in a cauldron of water on a wood fire and seasoning them with garlic and fennel. Tomatoes were added to the recipe in the 17th century, after their introduction from the Americas.
In the 19th century, as Marseille became more prosperous, restaurants and hotels began to serve bouillabaisse to upper class patrons. The recipe of bouillabaisse became more refined, with the substitution of fish stock for boiling water and the addition of saffron.
Bouillabaisse spread from Marseille to Paris, and then gradually around the world, adapted to local ingredients and tastes.
The name bouillabaisse comes from the method of the preparation—the ingredients are not added all at once. The broth is first boiled (bolh) then the different kinds of fish are added one by one, and each time the broth comes to a boil, the heat is lowered (abaissa).
Generally similar dishes are found in Greece, Italy (zuppa di pesce), Portugal (caldeirada), Spain (sopa de pescado y marisco, suquet de peix), and all the countries bordering the Mediterranean Sea. What makes a bouillabaisse different from these other dishes are the local Provençal herbs and spices, the particular selection of bony Mediterranean coastal fish, and the way the broth is served separately from the fish and vegetables.
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