Heavy cream typically lasts about 1 month in the refrigerator after opening, provided it is stored properly at a consistent cold temperature, ideally in the back or bottom shelf of the fridge where it is coldest

. This applies to both regular and ultra-pasteurized heavy cream, the latter having a longer shelf life due to higher heat treatment during processing

. You can often use heavy cream safely for several weeks beyond the printed expiration date if it has been kept refrigerated and shows no signs of spoilage

. To determine if heavy cream has gone bad, check for curdling, thick lumps, or a sour smell-these indicate bacterial growth and spoilage

. Some sources note that heavy cream may stay fresh for about 7 days after opening according to manufacturer guidelines, but many users report it lasting closer to 2-4 weeks when stored well and unopened cream can last up to 30 days or more

. Additionally, heavy cream can be frozen for 3-4 months if you want to extend its shelf life beyond refrigeration

. Summary:

• Heavy cream lasts about 1 month in the fridge after opening if stored properly.
• It can often be used safely beyond the expiration date if no spoilage signs appear.
• Spoilage signs include lumps, curdling, and sour smell.
• Some recommend using within 7 days, but many find it good for 2-4 weeks.
• Freezing is an option for longer storage (3-4 months).

This range depends on storage conditions and whether the cream is ultra- pasteurized or not