Reba

Reba is simply the Japanese rendering of the English word 'liver,' and as an organ skewer it belongs to the broader history of yakitori rather than to any single recorded inventor or shop. Skewered grilled birds were sold at Edo-period (17th–19th century) stalls, but chicken was then a luxury and offal eating was limited; the organ skewers that round out a modern yakitori menu — liver, heart, gizzard, skin, cartilage — took their familiar form alongside the spread of cheap, plentiful broiler chicken and the postwar izakaya. Eating every part of the bird, motsu included, is part of the thrift and completeness that defines the genre. The liver's nutrient density — it is exceptionally high in iron and vitamin A — has long made it a valued part to eat as well as a flavorful one.

A well-grilled liver skewer is soft and dense, almost melting on the tongue, with a smooth, creamy, faintly sweet richness and a deep iron-mineral note that organ-meat lovers seek out. The center should stay just moist and rosy while the surface takes on a smoky char; tare coats it in glossy, sweet-salty lacquer that tempers the mineral edge, while shio keeps it cleaner and more direct. Soaking and careful grilling are what keep it from tasting bloody, bitter, or livery. Overcooked, the liver turns dry, chalky, and grainy, losing the smooth custard texture that is its whole point.

Soaking the trimmed liver in cold water — or milk, as some cooks prefer — draws out residual blood and the compounds that read as bitter and overly livery, which is why an unsoaked liver tastes harsh. The grilling is a balance: liver proteins set quickly, and the goal is to cook through to safety while pulling the skewer before the heat squeezes out moisture and over-coagulates the proteins into a dry, grainy mass, so it is grilled hot and fast and rested briefly. The liver's smooth, dense texture comes from its fine, uniform cell structure and high fat and glycogen content, which set into a custard-like firmness rather than fibrous chew. Tare — soy, mirin, sake and sugar simmered down — browns over the coals through the Maillard reaction into a sweet, sticky glaze whose sugar and aroma round off the mineral bite.