The shelf life of refrigerated chocolate milk depends on various factors, such as the processing method, packaging, and storage conditions. Generally, commercially packaged and pasteurized chocolate milk can last for about 5 to 7 days in the refrigerator when kept at a temperature of around 40°F (4°C) or below.
It's essential to check the expiration date on the packaging and consume the chocolate milk before that date for the best quality and safety. If the milk starts to smell sour, develop an off taste, or show signs of spoilage (such as curdling or visible mold), it should be discarded, regardless of the expiration date.
For homemade chocolate milk, the shelf life may be shorter, typically around 2 to 4 days, as it lacks the preservatives found in commercially processed versions.
Remember that the shelf life is just an estimate, and various factors can affect the freshness and safety of the chocolate milk. Always use your senses (smell, taste, and look) as a reliable guide to determine if it's still suitable for consumption. When in doubt, it's best to err on the side of caution and discard any milk that appears or smells off.