How Long Does Heavy Cream Last?

An unopened carton of heavy cream holds for 1-2 weeks past its printed date in the fridge, while an opened one is best used within about a week, since its high fat content offers a bit more natural resistance to bacteria than a leaner dairy product does, though that resistance narrows considerably once air and repeated pouring introduce contamination. A sour smell, visible lumps or curdling in the liquid, or a yellowish tint replacing its normal off-white color are the clear signs a carton has turned.

Cream stored toward the back of the fridge, at the coldest and most consistent temperature, holds its quality closer to the long end of that window than a carton kept in a door shelf exposed to wider swings every time the fridge opens. Heavy cream left out at room temperature for more than about two hours, whether during a party or on the counter while baking, should be treated with more caution than the printed date alone suggests, since its fat content doesn't make it immune to temperature abuse the way some assume. A carton that whips into peaks tasting slightly less rich or faintly sour, even before any obvious curdling shows up, is often close to the end of its good window and worth cooking with rather than serving raw. Ultra-pasteurized heavy cream, the kind most widely sold in US grocery stores, tends to hold slightly longer than a minimally processed, non-ultra-pasteurized carton, since the higher heat treatment kills off more of the bacteria that would otherwise start the spoilage clock sooner.

See Heavy Cream's full storage & shelf-life guide (with spoilage signs) →