Understanding The Language Around Cephalopods
French has two words for what English calls "octopus," which drives people who cook with these animals absolutely mad. The short version: poulpe and pieuvre both mean octopus. Calamar is squid. That's it. The rest is regional preference and scientific habit. I learned this the hard way when ordering from a supplier in Marseille. I asked for "pieuvres" because that's what I'd grown up hearing in Normandy. The fishmonger handed me six kilos of giant Pacific octopus, which was fine, except the recipe I was following called for tenderizing the meat, and these things have a different muscle structure than the common octopus you get in supermarkets back home. If you're using a recipe that assumes Octopus vulgaris, go ahead and confirm what species you're actually getting. A lot of confusion in French cooking comes down to assuming the word maps perfectly to one animal. Poulpe is the scientific and formal term. You'll see it in biology textbooks, aquarium labels, and on menus that want to sound precise. The genus is Octopus. Pieuvre is the everyday word. It shows up in general conversation, at the market, on casual restaurant menus. Both refer to the same eight-armed creatures. There is no biological distinction between a poulpe and a pieuvre. It's the same as saying "automobile" versus "car."
Calamar is squid, and it comes from a completely different order. Octopuses are octopoda. Squid are teuthida. They have eight arms and two longer tentacles, a streamlined body, and a internal shell called a pen. Octopuses have eight arms only, no tentacles, and no internal skeleton. In the kitchen this matters because squid cooks fast and stays chewy if you overdo it, while octopus needs either very high heat for a short time or very low heat for a long time to break down the connective tissue. Throw a squid recipe at an octopus and you'll end up with something rubbery that no amount of chewing fixes. One thing people consistently get wrong is the plural forms. Des poulpes or des pieuvres. Both are accepted. Des calamars is standard, though des calamars also appears in older texts. When I'm writing a shopping list I just use whatever the packaging says to avoid any confusion at the counter. If you're reading French recipes and second-guessing yourself, just check whether the dish describes eight arms or ten limbs. Eight is octopus. Ten is squid. The word choice between poulpe and pieuvre won't change the animal.
