How long does milk last once mixed?

The shelf life of milk once mixed depends on several factors, including the type of milk, the temperature at which it is stored, and whether it is unpasteurized or pasteurized. Here's a general guideline:

Unpasteurized Milk

* At room temperature (72°F or 22°C or above): Do not consume. Unpasteurized milk should always be refrigerated.

* In the refrigerator (40°F or 4°C or below): Up to 3-5 days.

Pasteurized Milk

* At room temperature: Up to 2 hours. Avoid leaving pasteurized milk at room temperature for extended periods to prevent bacterial growth.

* In the refrigerator:

- Whole Milk: Up to 5-7 days.

- Reduced-Fat (2%) Milk: Up to 7-10 days.

- Low-Fat (1%) Milk: Up to 10-12 days.

- Non-Fat (Skim) Milk: Up to 10-12 days.

- Lactose-Free Milk: Up to 7-10 days.

- Ultra-Pasteurized Milk (Shelf-Stable): Up to 10-12 days under refrigeration. Can be stored at room temperature unopened.

Note: These are approximate shelf life guidelines, and the actual duration can vary depending on individual conditions and storage practices. To ensure safety and freshness, always refer to the "sell-by" or "use-by" date on the milk packaging and discard milk if it has gone beyond this date.

Tips to Extend the Shelf Life of Milk:

1. Store milk in the coldest part of the refrigerator, usually the back or lower shelf.

2. Keep milk in its original container or transfer it to an airtight, clean container.

3. Avoid frequent opening and closing of the milk container to minimize exposure to air and bacteria.

4. Discard milk if you notice any signs of spoilage, such as an unusual odor, taste, or texture.

Following these recommendations will help keep your milk safe and fresh for as long as possible.