What is the estimated shelf life of fresh pasteurized milk, if stored properly and unopened?

The estimated shelf life of fresh pasteurized milk, when stored properly and kept unopened, is generally around 12-18 days. This duration accounts for the quality of the milk, including its taste and nutritional value. Pasteurization, which involves heating milk to eliminate harmful bacteria, extends its freshness compared to raw milk.

When milk is kept in a cool, consistent temperature environment, such as a refrigerator at or below 40°F (4°C), its freshness can be preserved effectively within this timeframe. It's important to note that while milk may still be safe to consume slightly beyond this period, its flavor and quality may begin to deteriorate, which is why the specified range is emphasized for optimal consumption.

Other answers suggest shorter or longer periods, which do not accurately reflect the average quality preservation characteristics of pasteurized milk under proper storage conditions.