- How long does shelf-stable, ultra-high temperature (UHT) milk last once opened? The precise answer depends to a large extent on storage conditions — keep opened shelf-stable UHT milk (UHT milk that has been sold unrefrigerated) refrigerated and tightly closed.
To maximize the shelf of opened shelf-stable UHT milk, do not store it on the fridge door, as the temperature is too warm - the opened shelf-stable UHT milk will last longer when stored in the main body of the refrigerator, in its original package.
How long does opened shelf-stable UHT milk last in the refrigerator? Shelf-stable UHT milk that has been continuously refrigerated will keep for about 7 to 10 days after opening.
How can you tell if opened shelf-stable UHT milk is bad or spoiled? The best way is to smell and look at the shelf-stable UHT milk: if the shelf-stable UHT milk develops an off odor, flavor or appearance it should be discarded.
Sources: For details about data sources used for food storage information, please click here