Boiling milk once will not necessarily spoil it immediately, but it can significantly reduce its shelf life compared to raw or unpasteurized milk. When milk is boiled, it kills many of the bacteria and microorganisms present, which helps to extend its freshness. However, milk is still perishable and can spoil over time due to the remaining bacteria and other factors.
The time it takes for boiled milk to spoil depends on various factors, including the temperature at which it is stored, the cleanliness of the container, and the initial quality of the milk. Generally, boiled milk can last anywhere from a few hours to a couple of days before showing signs of spoilage.
Here are some general guidelines for the storage of boiled milk:
Refrigeration: To extend the shelf life of boiled milk, it is crucial to refrigerate it promptly. Keeping it at a consistently cold temperature (around 40°F or 4°C) will slow down the growth of bacteria and help preserve its freshness.
Clean container: Store the boiled milk in a clean and airtight container to minimize the risk of contamination.
Smell and taste: Always check the milk before use. If it develops an off odor or tastes sour, discard it as it may have spoiled.
Use it soon: It's best to use boiled milk within a day or two after boiling to ensure its quality and safety.
Keep in mind that individual factors can influence the spoilage rate, so it's essential to use your senses (smell, taste, and look) to assess the freshness of the milk before consuming it, especially if you've stored it for more than a day. If there's any doubt about its safety, it's better to err on the side of caution and discard it.