Some states regulate if and how expiration dates on milk should be labeled, but these regulations differ between states 4. This means you may see several types of dates on your milk carton — none of which indicate food safety 3 :. Therefore, the printed date can give you an idea of when the quality will start to decline. In the United States, most milk purchased from the grocery store has been pasteurized 5.
Pasteurization is a process that involves heating milk to destroy potentially harmful bacteria, including E. By doing this, the shelf life of milk is extended by 2—3 weeks 6 , 7. One study found that the temperature in your refrigerator greatly affects how long your milk stays good past the listed date. Unless milk is shelf-stable, it should never be left out at room temperature for more than 2 hours, as this increases your risk of foodborne illness 3.
In contrast, raw milk has not been pasteurized and has a shorter shelf life. Drinking this type may also increase your risk of foodborne illness 10 , UHT is similar to pasteurization but uses higher heat, making unopened milk products safe to store at room temperature Unopened, UHT milk can generally last 2—4 weeks past the printed date if stored in a cool, dry pantry, and up to 1—2 months in the fridge.
However, once opened, UHT milk should be stored in the fridge and consumed within 7—10 days 9. Milk may be good for several days after the sell-by or best-by date. Here are a few tips on how to keep your milk from spoiling quickly 13 :.
While milk can be frozen for up to 3 months, freezing and subsequent thawing can result in undesirable changes in texture and color. That said, it will be safe to drink Even after opening, most milk is safe to drink for several days past the use-by or sell-by date.
Proper storage and handling may help it stay fresh and safe for longer. However, if you're trying to stay hydrated, but you keep vomiting up the Pedialyte or the Gatorade that you're trying to drink, you might be experiencing more severe symptoms, says Dr.
If this is the case, you should go to urgent care or your doctor's office so they can give keep you hydrated with IV fluid. Last but not least, Dr. Sonpal notes that both salmonella and E. Meaning, if you do get sick after gulping down a glass, it can't hurt to go to you doctor's office just in case.
And as a hard-and-fast rule, he recommends you never ever!!! Yes, we all learned as children not to cry over spilled milk. Spoiled milk, however, is a different story. So do yourself a favor and take a whiff before you drink a glass. Oh hi!
Contrary to popular belief, spoiled milk may have a place in your next culinary pursuit. Not to mention, using spoiled milk in recipes is a great way to reduce food waste. Spoiled milk is the result of an overgrowth of bacteria that compromises the quality, flavor, and texture of milk.
Since the late s, the vast majority of commercially produced milk is pasteurized. The pasteurization process kills many of the most harmful strains of bacteria known to cause foodborne illness , including E.
Over time, these small bacterial communities can multiply and eventually cause your milk to spoil. When milk begins to spoil, it develops an unpleasant, rancid odor. The scent is hard to miss and gets stronger with time. The taste also begins to change, as the natural sweetness of fresh milk is quickly replaced by a somewhat acidic or sour flavor.
With enough time, the texture and color of milk that has spoiled will change as well. It may begin to develop a slimy, chunky texture and dingy, yellow color. The rate at which milk spoils depends on many factors, including the number of spoilage bacteria present, temperature at which the milk has been stored, and light exposure 1. Milk spoils due to an overgrowth of bacteria that compromises its quality.
You know your milk is spoiled if it has an unpleasant odor or taste or changes texture. The terms spoiled and sour are often used interchangeably to describe milk that has gone bad, but there may be a subtle difference between the two — depending on who you ask. Spoiled milk usually refers to pasteurized milk that smells and tastes off due to the growth of bacteria that survived the pasteurization process. On the other hand, sour milk often refers specifically to unpasteurized, raw milk that has begun to naturally ferment.
Much like spoiled milk, the fermentation of raw milk occurs due to various species of lactic-acid-forming bacteria, a small percentage of which are considered probiotics and may offer minor health benefits 3.
Spoiled milk usually refers to pasteurized milk that has gone bad, while sour milk may refer to raw milk that has begun to ferment. Most people are immediately turned off by the foul smell and taste of spoiled milk, which makes the decision about drinking it a relatively easy one.
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