Once opened, milk can typically be kept in the refrigerator for about 5 to 7 days. However, the exact duration can vary based on several factors:
1. Refrigerator Temperature
- Ideal Temperature: Milk should be stored at a consistent refrigerator temperature of 40°F (4°C) or lower. Ensure your refrigerator is functioning properly and maintaining the correct temperature.
2. Handling and Storage
- Seal and Storage: Always keep the milk tightly sealed in its original container to prevent contamination and absorption of other odors. Store it in the main compartment of the fridge rather than in the door, where temperatures can fluctuate more.
- Avoid Leaving Out: Try to minimize the time milk spends outside the refrigerator. Returning it to the fridge promptly after use helps maintain its freshness.
3. Smell and Appearance
- Check for Spoilage: Before consuming milk, check for any off smells, changes in texture, or sour taste. If the milk smells or tastes sour, or if there is curdling or lumps, it is best to discard it.
4. Expiration Dates
- Use by Date: Always check the expiration date on the milk carton. Even if milk is within the 5 to 7-day range after opening, it should not be consumed if the expiration date has passed.
5. Types of Milk
- Regular vs. Ultra-Pasteurized: Ultra-pasteurized milk generally has a longer shelf life than regular pasteurized milk. Follow the same general guidelines, but always refer to specific packaging information for best results.
By following these guidelines and paying attention to the milk’s condition, you can ensure that it remains safe and fresh for as long as possible.
