this was taken from free patents online.......
A corned beef, commercially available in Japan and some countries in the world, and distinct from a simulated corned beef to which the present invention pertains, is often manufactured from a mixture of beef, pork, lamb and horse meat. Prior to these livestock meats being mixed and filled in a casing such as a can or any suitable container with seasoning and fatty substances added, they are, after having been treated by curing and boiling, loosened by the use of a pressure-applying roll or a mixer to provide isolated texture fibers. This may be considered distinct from a genuine corned beef which is manufactured by packing into a can a lump of cured and boiled beef, neither the tissue of the beef being loosened nor the fatty substance being added.