Shelf stable almond milk, in addition to being ultra pasteurized, is packaged in sealed, sterile Terta Pak cartons to allow it to be stored at room temperature when its unopened. Once opened, the carton should be stored in the refrigerator and most brands state that the milk should be used within 7 1. Dont simply toss the milk after those dates, however, as the milk might actually not be bad yet. How will you know when it doesIts definitely harder to tell but once the milk goes bad, you pretty much know, says Carolyn. It tastes a little sour, is thicker and may start to clump up, and smells a little off. What if it separates One common myth is that if it separates, its bad, but in fact any almond milk will separate naturally, says Carolyn. Stabilizers and emulsifiers will make shelf stable ones separate more slowly, but regardless, it is natural, normal, and not a sign of it going bad. Just shake the milk before using, she says. Is there a way to keep it fresh for longerRegardless of which type of almond milk you buy, a key to keeping it fresh is temperature control. Carolyn recommends storing fresh and opened self stable milk in the back of the fridge, the temperature is coldest and most stable, as opposed to the door, where temperature can fluctuate. Does Almond Milk Go Bad If You Leave It Out' title='Does Almond Milk Go Bad If You Leave It Out' />We are told we need to drink milk to be healthy. But, do we really Are there any cold, hard facts about milk that contradict this health claim There certainly are The European Commission organized independent research to review the effect of rBGH on public health, which revealed that cows milk poses major risks of cancer. Its not that good for you. Its not that almond milk is bad for you, per se, but a glass of storebought almond milk does not offer a ton of nutrients.