toward the middle of the enclosed space within the hydrocyclone thus heavier components exit the cyclone through an output port at or toward the bottom of the hydrocyclone cone shaped segment while lighter components exit the hydrocyclone through output ports located at or toward the top of the hydrocyclone body in some embodiments the fluid stream is pumped into the input port of the hydrocyclone e g using a suitably sized centrifugal pump which is in communication via a sealed connection with a grinder which is itself in communication via a sealed connection with a source of beef such that a continuous stream of beef is ground prior to entering the input port the ground beef is combined with pressurized co2 to form a suspension of beef particles in the co2 the suspension may be transferred into input port of the hydrocyclone in a controlled continuous stream at a velocity and rate of mass flow most suited to the hydrocyclone apparatus the source of beef is desirably but not necessarily any suitable quantity of 50 39 s 65 39 s or even 75 39 s boneless beef but most preferably that grade of boneless beef that yields the most lucrative proportional quantities of fat and lean beef derived from the selected source an illustrative embodiment of a hydrocyclone having four output ports and a means for separating lean beef from beef fat using the apparatus is represented in fig1 which.