<\/h3>\nRegular pasteurization heats the cream to a minimum of 161\u00b0F for 15 seconds, which kills most harmful bacteria while preserving the flavor. Ultra-pasteurization (UHT) heats the cream to a minimum of 280\u00b0F for just 2 seconds, killing almost all bacteria and spores. According to Cornell University’s Department of Food Science, this extreme heat treatment extends shelf life from a week or two to 30 to 60 days or more.<\/p>\n
Most heavy cream sold in American supermarkets today is ultra-pasteurized. Look for \u201cultra-pasteurized\u201d or \u201cUHT\u201d on the label. A carton of heavy cream with a use-by date of six weeks ago is almost certainly ultra-pasteurized.<\/p>\n
exchange:<\/strong> Ultra-pasteurization slightly alters the flavor compounds in the cream, giving it a milder flavor than regular pasteurized cream. More importantly for bakers, it can be difficult to whip ultra-pasteurized cream to stable peaks because heat treatment destroys some of the proteins that help the cream maintain its structure. For cooking, sauces and soups the difference is irrelevant. For whipped cream and delicate desserts, local farm-fresh regular pasteurized cream will often perform better.<\/p>\n<\/div>\nThe Sour Odor Problem: When Does It Really Get Bad?<\/h2>\nThis is the most common heavy cream question and one of the most confusing. Heavy cream develops a slightly tangy, slightly sour aroma as it ages, before it actually goes bad. This occurs because naturally occurring lactic acid bacteria produce lactic acid as they metabolize the lactose in cream, creating the same mild sourness that is intentional in sour cream and cr\u00e8me fra\u00eeche.<\/p>\n
Practical Guide:<\/p>\n
Light, clean touch:<\/strong> Not necessarily bad. If the smell of the cream is slightly sour but clean, not dirty or rancid, and is within its shelf life window, it may still be usable in cooked applications where the heat will further pasteurize it. Taste in small quantities. If its flavor is mildly tart but not unpleasant, it can often be used in soups, sauces, and baked goods, where the mild sourness will complement or complement the dish.<\/p>\nPungent, foul, musty, or ammonia-like odor:<\/strong> Bad. Discard immediately. There is a clear sensory difference between a slightly sour aging cream and a truly decadent cream. The smell of fresh cream is clean and dairy-sweet. The smell of aging cream is slightly pungent. Bad cream definitely smells bad.<\/p>\nIf the whipped cream smells sour at all, do not use it.<\/strong> Even light sour cream will not curdle properly and will taste bad. Reserve some of the old cream for cooking use and use fresh cream for whipping.<\/p>\nSigns that heavy cream has gone bad<\/h2>\n\n
when to throw it away<\/h3>\nStrong, foul, or musty odor:<\/strong> The clearest indicator. The aroma of fresh cream is clean and sweet. The smell of old cream is slightly pungent. Spoiled cream smells extremely sour, rancid or foul which makes you nervous. Trust your nose.<\/p>\nMould:<\/strong> Any cloudy growth of any color on the surface or inside the carton means immediate removal.<\/p>\nSignificant yellowing or discoloration:<\/strong> Fresh heavy cream ranges from white to very light ivory. Significant yellowing, especially at the corners of the carton or on the surface of the cream, indicates spoilage.<\/p>\nStringy or sticky texture:<\/strong> The heavy cream should pour in easily and evenly. A stringy, stringy or sticky texture when poured is a clear sign of bacterial spoilage. Discard immediately.<\/p>\nLumps that won’t dissolve:<\/strong> Some thickening is normal in cold cream. Small lumps that dissolve with gentle stirring or heating are not necessarily bad. Significant solid lumps or coagulation that is not smooth indicate that the cream has broken down and is past its peak state.<\/p>\nTime:<\/strong> Discard opened heavy cream after 10 days or a maximum of 2 to 3 weeks as recommended by the USDA, even if it passes the smell test. High-moisture dairy may aid the growth of bacteria without causing obvious symptoms.<\/p>\n<\/div>\nCan you freeze heavy cream?<\/h2>\nYes, and USDA FoodKeeper confirms freezing heavy cream for 3 to 4 months. However, freezing changes the texture. The fat and liquid in cream can separate during freezing and thawing, resulting in cream that may appear slightly grainy or that does not curdle as well as fresh cream. Frozen and melted cream work perfectly for cooking applications (soups, sauces, pasta dishes, casseroles) and the texture difference disappears once added to hot dishes. Use fresh cream for whipping.<\/p>\n
To freeze: Pour into portions into an airtight freezer-safe container or ice cube tray. Leave a little space in the containers as the cream expands a bit when frozen. Label with date and amount. Thaw in the refrigerator overnight and stir or shake well before using. Use within 24 hours of thawing.<\/p>\n
What to do with heavy cream before it spoils?<\/h2>\nIf you’ve got heavy cream near your window, here are the fastest ways to use it up:<\/p>\n
Make instant pan sauce.<\/strong> Any roasted protein becomes a restaurant-quality dish with a splash of cream added to the pan with garlic and herbs.<\/p>\nMix it into fried eggs.<\/strong> A tablespoon of cream per egg makes the eggs more delicious, fluffy.<\/p>\nMake whipped cream and freeze it.<\/strong> Whip the cream to soft peaks, drop by spoonfuls onto a parchment-lined baking sheet and freeze until solid. Put in a bag and store for up to 2 months. Use frozen directly on hot drinks and desserts.<\/p>\n\n
See also<\/p>\n
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Make a simple pasta sauce.<\/strong> Parmesan, black pepper and reduced cream with pasta water is one of the quickest weeknight dinners possible.<\/p>\nAdd to coffee.<\/strong> Heavy cream in coffee persists for several days after opening and small daily amounts add up quickly.<\/p>\nHow to Store Heavy Cream Properly<\/h2>\n\n
Best Storage Practices<\/h3>\nAlways keep it on the main shelf at the back of the refrigerator.<\/strong> The coldest, most consistent temperature in the refrigerator is at the back of the main shelf. The door is the hottest place and the worst place for cream.<\/p>\nKeep tightly sealed after each addition.<\/strong> Sourness is intensified by air contact. If the original carton doesn’t seal well, transfer it to an airtight glass container.<\/p>\nDo not store near foods with strong odors.<\/strong> Heavy cream easily absorbs surrounding odors. Stay away from onions, fish and other strong smelling foods.<\/p>\nUse clean water every time.<\/strong> Never pour cream back into the carton from a measuring cup that may have touched other ingredients. Contamination significantly reduces shelf life.<\/p>\nLabel the opening date.<\/strong> Heavy cream looks the same on day 5 and day 12. The date on the carton takes out the guesswork.<\/p>\nFreeze what you can’t use within a week.<\/strong> If a recipe uses a portion of the carton and you don’t regularly cook with cream, freeze the rest immediately instead of refrigerating it slowly.<\/p>\n<\/div>\nRecipes that use heavy cream<\/h2>\nFrequently Asked Questions<\/h2>\n\n
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My heavy cream smells slightly sour. Can I still use it?<\/h3>\nIt depends on how sour you are using it and what you are using it for. Cream has a very mild, clean tartness that is often aged naturally, without spoiling, within a 10 day open window. If the smell is subtle and not unpleasant, taste a small amount. If its flavor is mildly spicy but acceptable, it is suitable for soups, sauces, and baked goods where it will be cooked. Do not use it for whipping. If the smell is strong, foul, or makes you want to back away, discard it. When in doubt, throw it out \u2013 heavy cream is cheaper than the dish it might ruin.<\/p>\n<\/div>\n
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Can I use heavy cream that has passed its expiry date?<\/h3>\nAs for unpasteurized ultra-pasteurized cream, yes, it often sticks well. The use by date on ultra-pasteurized heavy cream is conservative and the cream is generally safe and of good quality for 30 to 60 days from the printed date if it has been continuously refrigerated. Always check for smell, taste and visual cues before using. For opened cream, follow the USDA 10-day guideline regardless of the printed date, and use your senses as the ultimate guide.<\/p>\n<\/div>\n
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Why won’t my heavy cream whip?<\/h3>\nThree common reasons. First: The cream is ultra-pasteurized. UHT processing can make it difficult to whip the cream to stable peaks. For best whipping results, look for regular pasteurized cream from a local dairy if possible. Second: The cream or bowl is too hot. Both the cream and the whipping bowl should be very cold. Chill the bowl and beaters in the freezer for 15 minutes before whipping. Third: The cream has passed its prime. Even cream that has an acceptable smell will not be able to whip well if it is old. Fresh, cold whipped cream is the most reliable.<\/p>\n<\/div>\n<\/div>\n
Further reading<\/h2>\n\n
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