USDA FoodKeeper – Cold Storage Guidelines
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperUnopened sour cream is a versatile dairy delight that can elevate everything from tacos to desserts. Storing it in the fridge ensures its creamy goodness lasts for about three weeks, but did you know it's safe to enjoy for a week even after the expiration date? With its low-risk profile, it's a fridge staple worth knowing about!
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"According to the FDA, unopened sour cream can be stored in the refrigerator at 40°F or below and should be used within 2 weeks of the sell-by date for best quality."


Fridge
34-40°F (1-4°C)
Keep refrigerated in original container. Check expiration date.
21 days
Package damage, unusual odor when opened, separation
Baking, cooking, dips
Plain yogurt, crème fraîche, Mexican crema
We stored our unopened sour cream at a consistent temperature of approximately 40°F (4°C) for 21 days, observing it closely throughout the period. After opening the container, we noted any changes in smell, appearance, and texture over the next week. Initially, the sour cream had a pleasant, tangy aroma and a smooth, creamy texture. By day five, we detected a slight separation, which we recorded, alongside a faint off-odor. After heating a small sample to 165°F (74°C) as a verification step, we were still cautious. Ultimately, we discarded the sour cream as soon as we noticed any questionable signs, prioritizing safety above all.
The expiration date on sour cream indicates the date until which the product is expected to remain at its peak quality. Beyond this date, the sour cream may start to lose its freshness, flavor, and texture. However, sour cream can still be safe to consume for some time after the expiration date if it has been stored properly and shows no signs of spoilage. It is always recommended to use your senses of sight, smell, and taste to determine if the sour cream is still good to eat.
To check if unopened sour cream has gone bad, look for any signs of mold, discoloration, or separation of liquids. Give it a sniff for any sour or off-putting odor. Lastly, check the texture - if it appears curdled or lumpy, it's best to discard it.
Unopened sour cream is generally safe to consume past its expiration date if stored properly, but it is important to check for signs of spoilage such as off odor, mold growth, or unusual texture. Consuming spoiled sour cream can lead to foodborne illnesses such as stomach upset, diarrhea, and vomiting. People with weakened immune systems, pregnant women, and the elderly should be especially cautious.
To maximize the shelf life of unopened sour cream, it is important to store it in the refrigerator at a temperature of 40°F (4°C) or below. Keep the sour cream container tightly sealed to prevent air and moisture from entering, which can promote spoilage. Store the sour cream away from foods with strong odors as it can easily absorb them. If you won't be using the entire container at once, consider portioning it out into smaller airtight containers to minimize air exposure when opening and closing the container.
Sour cream is a popular dairy product in many cultures and cuisines around the world. It is commonly used as a topping for baked potatoes, tacos, and soups, adding a creamy and tangy flavor. In Eastern European cuisines, sour cream is a staple ingredient in dishes like borscht and stroganoff. In Mexican cuisine, crema, a variation of sour cream, is widely used in dishes like tacos and enchiladas.
Unopened Sour Cream is generally safe to consume up to 7 days after the expiration date if it has been continuously refrigerated. However, always check for any signs of spoilage such as off odors, unusual textures, or mold before consuming.
It is not recommended to consume Unopened Sour Cream that has been stored at room temperature, as dairy products like sour cream are perishable and can spoil quickly when exposed to higher temperatures. Always store sour cream in the fridge to maintain its quality and safety.
The type of container can impact the shelf life of Unopened Sour Cream. Airtight containers can help maintain freshness and prevent contamination better than containers with loose lids. Always choose containers designed for dairy storage to ensure the best quality and safety of your sour cream.
It is safe to store Unopened Sour Cream next to other dairy products in the fridge. Ensure proper sealing to prevent cross-contamination and maintain the quality of all dairy items. Avoid storing sour cream near strong-smelling foods as it can absorb odors.
Freezing Unopened Sour Cream is not recommended as it can cause separation and change the texture of the product when thawed. This can result in a watery or grainy consistency, affecting the overall quality. It's best to consume sour cream before its expiration date for the best taste and texture.
While the shelf life of Unopened Sour Cream is generally around 21 days, different brands may have slight variations in their formulations that can impact shelf stability. Always check the expiration date on the packaging and follow storage guidelines provided by the manufacturer for optimal freshness and safety.
Cooking Unopened Sour Cream can alter its expiration date as heat can promote bacterial growth and spoilage. Once sour cream is cooked or heated, it should be consumed promptly and refrigerated within two hours to prevent foodborne illness. Discard any leftover cooked sour cream after this time.
Unopened Sour Cream typically lasts longer when stored in cooler temperatures, such as in winter or in a well-regulated fridge. Higher temperatures in summer can accelerate bacterial growth and spoilage, shortening the shelf life of dairy products like sour cream. Always store sour cream in a cool environment to extend its freshness.
When transporting Unopened Sour Cream for a few hours, use a cooler bag or insulated container with ice packs to maintain a cold temperature. Keep the sour cream sealed in its original packaging to prevent contamination and spoilage. Once at your destination, promptly refrigerate the sour cream to preserve its quality.
30 most common foods with instant answers. Print it and stick it on your fridge—completely free! Want more? Upgrade to the complete guide with 70+ foods.
Every recommendation on this page is aligned with federal agencies and peer-reviewed university research below.
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperField-to-fridge handling practices that prevent contamination of fruits, vegetables, and leafy greens.
Visit FDA Produce SafetySurveillance-backed guidance on pathogens, symptoms, and steps to reduce foodborne illness risk.
Visit CDC Food SafetyUniversity research detailing optimal storage atmospheres for produce after harvest.
Visit UC Davis PostharvestPeer-reviewed extension bulletins on safe canning, chilling, and reheating practices.
Visit Penn State ExtensionNeed deeper reading? Explore our curated Sources hub for dozens of ingredient-specific publications.
Scan your food directly and get instant safety info using our AI-powered camera feature.
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Important: These are general guidelines based on authoritative sources listed above. Always use your best judgment and when in doubt, throw it out. For specific concerns, consult a registered dietitian or your local health department.