Usually, the jars of sauce that I buy say something like "Once opened, refrigerate and use within three days."
It is usually fine if I keep it a little bit longer than that.
I used some curry sauce last night - a new brand I've never used before - and used about half the jar. (I cook for only two people.) I put the remainder in the fridge.
I just noticed that instead of the usual "Refrigate after opening", the jar says
ONCE JAR IS OPENED USE IMMEDIATELY.
Does that mean I have to throw the rest away now?
If so, I won't be buying that brand anymore.
I have another partially used jar of sauce in the fridge which says that it can be refrigerated. There isn't much of a difference between the ingredients in the two sauces. The one that can be refrigerated says it has no preservatives.