Does Creme Fraiche Go off?

Crème fraîche containers are stamped with a “sell by” date, which refers to how long the retail store can keep the product for sale on the shelf. Typically, crème fraîche will keep for up to eight weeks, if refrigerated. ... If any mold forms on the surface of the crème fraîche, discard it immediately.

How can you tell if creme fraiche is bad?

You'll know something has gone wrong with the fermentation process immediately from the smell. Creme fraiche should smell tangy, slightly acidic, but very fresh. If it ever smells very sour, or just plain bad, there is a chance there is a problem and it's better to toss it and start over.

How long does creme fraiche last once opened?

Crème fraîche is a fragile product. From the moment a pouch or pack is opened, the product is no longer protected. This is why it states on the packaging the product should be consumed quickly, usually within 3 or 4 days after opening, whilst the product retains its flavour and nutritional quality.