“Senmai (omasum)” is the third section of the stomach of a ruminant

A cow has four-chambered stomach: mino (rumen), hachinosu (reticulum), senmai (omasum) and giara (abomasum). Each chamber has a different function.

“Senmai” is the third stomach that send small food to the fourth one and push big food back to the second one. “Nama-senmai” means “raw” senmai. It is grilled and eaten in a Korean BBQ. It is eaten raw as well. It is cleaned, sliced and served. It is eaten with “gochujang (Korean red chilli paste)” as it itself is almost tasteless. One can enjoy the chewy texture.