Here's the basic rundown. Raw milk does not expire. It sours and becomes sour cream. Raw milk is full of live enzymes that kill bacteria and viruses. One California farmer was known to put e coli directly into a glass of fresh raw milk. Within 15 minutes or so, the e coli had been killed by the thriving ecosystem within the milk. To prove his point, he would then drink the milk.
Conversely, pasteurized milk has to be pasteurized because it usually comes from sick cows. Mega dairy cows have a productive lifespan of about 3-4 years, if I remember right, and their milk is somewhere between 1/4th to 1/3rd puss that separates during the pasteurization process which kills all antibodies, enzymes beneficial to digestion, and everything else. Without those enzymes, your body actually has to leach nutrition from your bones in order to properly digest the milk, contributing to osteoporosis.
After the pasteurization process it goes through a process that recombines the puss with the milk and prevents it from separating so it looks like it's all white milk. This 'dead' milk is essentially a liquid petri dish for bacteria. The reason why typical milk smells so bad when it goes past the date is because it is literally rotting in the jug.
Here's the basic rundown. Raw milk does not expire. It sours and becomes sour cream. Raw milk is full of live enzymes that kill bacteria and viruses. One California farmer was known to put e coli directly into a glass of fresh raw milk. Within 15 minutes or so, the e coli had been killed by the thriving ecosystem within the milk. To prove his point, he would then drink the milk.
Conversely, pasteurized milk has to be pasteurized because it usually comes from sick cows. Mega dairy cows have a lifespan of about 2-3 years, if I remember right, and their milk is somewhere between 1/4th to 1/3rd puss that separates during the pasteurization process which kills all antibodies, enzymes beneficial to digestion, and everything else. Without those enzymes, your body actually has to leach nutrition from your bones in order to properly digest the milk, contributing to osteoporosis.
After the pasteurization process it goes through a process that recombines the puss with the milk and prevents it from separating so it looks like it's all white milk. This 'dead' milk is essentially a liquid petri dish for bacteria. The reason why typical milk smells so bad when it goes past the date is because it is literally rotting in the jug.