Zabuton is a part of the chuck roll of beef, located below the Kurashita. Specifically, it refers to the meat in the ribeye portion. This cut is located near the shoulder and is a rare part, with only about 3 to 4 kilograms obtainable from a single cow.

Zabuton and Haneshita refer to the same part, known as Haneshita in Kansai and Zabuton in Kanto. The name "Zabuton" comes from its shape, which resembles a traditional Japanese cushion (zabuton). The name "Haneshita" literally translates to "below the wing," reflecting its anatomical position. Considering the cow's anatomical structure, Haneshita is located near the shoulder, between the torso and shoulder, under the "wing-like" structure.

This part is known for being very tender and juicy compared to other parts of the chuck roll. It has a good amount of marbling, making it the "most marbled" part of wagyu beef. It is very popular for yakiniku (grilled meat) and steaks. Especially recommended for charcoal grilling or grilling, where you can enjoy its delicious aroma and taste.