Answer by
bl834 (1317)
Basically all pasteurization does is slow microbial growth by heating the liquid to 80 degrees Celcius (176 degrees Fahrenheit). This is different from sterilization which attempts to kill & remove all microbes. Since pasteurized milk isn't heated as much as sterilized milk, it tastes closer to "raw" while being less likely to cause illness and is a less expensive process.