Raw cuttlefish juice will not have any problem if you drink it directly, and it has no special taste. Like other seafood, it is just as salty and powdery as sea water. Many people like the unique tidal flavor of raw cuttlefish juice and can directly taste the taste of the sea. The spaghetti and paella mixed with cuttlefish juice, although a lump of black can't bear to look straight, taste milder than the appearance, and there is no fishy smell or any strange smell at all. In fact, there is no smell at all.

The ink in the squid is usually stored in the ink bag in the belly. When the enemy attacks, they will spray an ink from the ink bag, dye the surrounding sea water black, and then take the opportunity to escape. Cuttlefish juice is a viscous suspension composed of fine black particles. It is a complex carbohydrate composed of sugar, protein, lipids and so on. It contains many active ingredients and has high medicinal value. As a traditional Chinese medicine, cuttlefish juice has long been recorded in Chinese medicine literature. It is recorded in the compendium of materia medica that "ink in the abdomen is mainly used to treat blood stabbing and heartache". It is recorded in Benjing that "it can stop bleeding, stop leukorrhagia, stop acid and relieve pain, remove dampness and heal sores".

Cuttlefish juice contains high-quality protein, potassium and amino acids, which can prevent arteriosclerosis, stroke and hyperlipidemia. Coupled with this research result and the myth that "everything is black, it must be supplemented", the Japanese began to develop a religion about cuttlefish juice, which not only mixed cuttlefish juice into noodles to make cuttlefish juice noodles, but also cooked cuttlefish juice biscuits, cuttlefish juice bread, cuttlefish juice moon cakes and other foods.