You can get squid ink by carefully removing the ink sac from a whole squid during cleaning, or by buying it pre-packaged in small jars or sachets from specialty food stores. Most people go the store-bought route, and interestingly, most commercially sold “squid ink” is actually cuttlefish ink, which has a smoother, more rounded flavor that works better in recipes.
Extracting Ink From a Whole Squid
If you’re cleaning a whole squid yourself, the ink sac is a small, silvery-black pouch tucked inside the body cavity alongside the other organs. To find it, first separate the head and tentacles from the body tube by pulling gently. Then reach into the body cavity and look for the ink sac among the innards. It’s fragile and about the size of a fingertip in most market-sized squid.
Carefully pinch the sac free without puncturing it. The ink stains hands, cutting boards, and clothing quickly, so work over a bowl and keep paper towels nearby. Once you’ve isolated the sac, snip it open over a small dish and squeeze the ink out. You can thin it with a teaspoon of water, wine, or broth to make it easier to work with. A single squid yields very little ink, so if a recipe calls for a tablespoon or more, you’ll need several squid or a supplemental jar of store-bought ink.
Buying Squid Ink
The easiest way to get squid ink for cooking is to buy it bottled. Specialty grocery stores, fishmongers, and online retailers sell it in small glass jars or individual foil sachets, typically holding around 4 to 15 grams each. Spanish and Italian brands are the most common, since squid ink is a staple in Mediterranean cooking.
Unopened, commercial squid ink lasts up to four years from the production date. Once you crack the seal, keep it refrigerated and use it within one to two weeks. If you have leftover ink, it freezes well for up to a year. Spooning it into an ice cube tray before freezing gives you portioned amounts ready for future recipes.
Squid Ink vs. Cuttlefish Ink
Most jars labeled “squid ink” at the store actually contain cuttlefish ink. That’s not a bait-and-switch; cuttlefish ink is genuinely preferred by chefs. It has a softer, more well-rounded flavor with a mild brininess, while true squid ink can taste stronger and more metallic. If you’re new to cooking with ink, cuttlefish ink is the more forgiving choice.
The color differs slightly too. Squid ink runs blue-black, cuttlefish ink leans brown-black, and octopus ink is the darkest, a true black. Octopus ink is rarely sold commercially because octopuses yield even less ink than squid and it isn’t widely used in traditional recipes. For pasta, risotto, paella, or sauces, cuttlefish or squid ink is what you want.
What’s Actually in Squid Ink
Squid ink is mostly water (about 89%) with roughly 9% protein and small amounts of carbohydrates, fat, and minerals. The deep color comes from melanin, the same pigment found in human skin and hair. Beyond melanin, the ink contains a mix of bioactive compounds including alkaloids and antioxidants, which give it natural antibacterial and anti-inflammatory properties. In Mediterranean tradition, cuttlefish ink has long been used to cure cuttlefish meat and extend its shelf life, essentially acting as a natural preservative.
Processed squid ink is also used as a natural food coloring in commercial products. Its striking black color is the main draw for dishes like squid ink pasta, where the ink dyes the dough jet black while adding a subtle oceanic, slightly salty flavor that complements seafood without overpowering it.
Tips for Cooking With It
A little squid ink goes a long way. For a pot of pasta or risotto serving four people, one to two teaspoons is usually enough to get a deep black color and noticeable flavor. Stir it into warm liquid first (stock, wine, or the pasta cooking water) rather than adding it straight to a dry pan, which helps it distribute evenly.
Squid ink pairs best with seafood, garlic, white wine, and olive oil. Classic dishes include squid ink pasta, Spanish arroz negro (black rice), and calamares en su tinta, which is squid braised in its own ink. It also works as a dramatic finishing touch swirled into aioli or bread dough. Keep in mind that the ink will stain your teeth temporarily during a meal, your hands during prep, and any porous kitchen surfaces it touches, so wipe spills immediately.