Sour cream, when properly refrigerated, typically lasts for one to three weeks after opening. This timeframe is consistent across multiple sources, including the USDA. However, several factors influence its shelf life.
Factors Affecting Sour Cream Shelf Life
- Storage: Maintaining a refrigerator temperature below 40°F (4°C) is crucial. Improper storage significantly reduces shelf life.
- Opening: Unopened sour cream generally lasts longer than opened sour cream. Once opened, the risk of contamination increases.
- Smell and Appearance: Before consuming, check for any off-putting smells or unusual appearances (mold, discoloration). Discard if any signs of spoilage are present.
Some sources suggest that sour cream might remain safe for slightly longer periods (up to two months in some cases), but this is highly dependent on individual storage practices and conditions. Relying on visual and olfactory cues is crucial for assessing the safety of sour cream past the recommended one to three-week timeframe.
Extending Sour Cream Shelf Life
While it doesn't freeze well, proper refrigeration is key. Using clean utensils to scoop out sour cream minimizes the introduction of contaminants, helping it stay fresher longer.
Conclusion:
The provided sources consistently indicate that refrigerated sour cream lasts approximately one to three weeks after opening. While longer durations might be possible depending on individual circumstances, this timeframe is a safe guideline.
