AUTOMATIC PRODUCTION OF VARIOUS GRADES OF GROUND BEEF

1 . A method for producing various grades of beef, comprising:

in two or more trains, creating a mixture of fat particles, lean particles, and a fluid, wherein each train is supplied with beef of varying fat content;

for each train, producing separate first and second fluid streams, wherein the first fluid stream comprises lean particles and the second fluid stream comprises fat particles;

for each train, adjusting the fat content of the lean stream by adding a controlled portion from the fat stream;

separately treating the lean stream from the fat stream to deactivate pathogens; and

producing two or more different grades of lean beef product.

2 . The method of claim 1 , further comprising, before creating the mixture, dicing the beef supply, and chilling the diced beef pieces to cause water in lean matter to reduce in density.

3 . The method of claim 2 , further comprising, after dicing and chilling, applying pressure to the chilled beef pieces to break off fat from the beef pieces to produce the fat particles and the lean particles.

4 . The method of claim 3 , further comprising, after breaking off fat, adding fluid to the fat particles and lean particles to cause the water in lean matter to increase in density, and causing lean particles to sink in the fluid and fat particles to rise in the fluid.

5 . The method of claim 1 , further comprising emulsifying fat particles after separation from the lean particles.

6 . The method of claim 5 , further comprising centrifuging emulsified fat particles to separate fluid, and lean matter.

7 . The method of claim 1 , wherein the fat particles are pasteurized.

8 . The method of claim 1 , wherein the lean particles are treated with super critical carbon dioxide.