A: Yes. Milk is homogenized to make the fat content standardized. Otherwise, milk processors would be in violation of labeling laws due to the fluctuating fat content over the course of the year and across different breeds of cattle. Typical processing removes all the fat from the milk and adds it back in at a specific level depending on the desired fat content. Then the milk is homogenized (passed through a fine screen mesh) to keep the fat from separating out again on the shelf. The leftover fat is sold as butter.