Plant Overrun

Plant efficiency or plant overrun is the sum of separation, churning, composition overrun and package fill efficiencies. In summary the theoretical maximum efficiency values are:

Separation Efficiency 98.85 
Churning Efficiency 99.60 
Composition overrun (% fat) 23.30 
Package overfill 0.20

These values can be used to predict the expected yield of butter per kg of milk or kg of milk fat received.