Giant Comb Pen Shell Sashimi

**Giant Comb Pen Shell Sashimi** is a raw seafood delicacy made from the adductor muscle and mantle of the *Atrina pectinata* (giant comb pen shell), a large bivalve mollusk prized for its sweet, briny flavor and crisp, tender texture. The dish originates in coastal regions where these shells are harvested wild, with Thailand’s eastern seaboard—particularly around Samaesan—being a prominent source. At Samaesarn Market, food creator **BANKII** highlighted this sashimi as a local specialty, noting that the shells are shucked tableside to ensure peak freshness. A great version is distinguished by the shell’s extreme freshness: the meat should be plump, translucent, and free of any grit; the adductor muscle should snap cleanly when bitten, releasing a clean, oceanic sweetness without any fishy aftertaste. Accompaniments typically include a sharp chili-lime dipping sauce (nam jim seafood) or a simple soy-wasabi mixture, though traditionalists may eat it plain to appreciate the natural umami. Regional variations exist: in Japan, pen shell sashimi (tairagai) is often served on ice with ponzu, while in Thailand, it may be lightly torched or paired with fresh herbs and fried garlic. The giant comb pen shell’s larger size—often exceeding 20 cm—makes it particularly suited for sashimi, as the thick mantle yields satisfyingly meaty slices. Harvesting requires careful handling to prevent sand retention, so purveyors like those at Samaesarn Market, as featured by BANKII, are valued for their expertise in preparing this pristine, ephemeral dish.