I was just reading an article about the discovery by archaeologists of evidence of milk fat on pottery shards at sites in Southern England wich would put dairy farming in Britain back to the Iron Age in 4000 B.C.
The term "goes off" was used to describe the milk going sour.
I've never heard this used to mean food spoiling, or going bad, before. Of course, in context, I knew what he meant right away. It's obviously a British usage here. However, "goes off" or "going off" is an expression which means getting angry or losing one's temper in the US (at least in my area of the East Coast) for as far back as I can remember. Can it also mean this in Britain, or is that term used exclusively to connote spoiled food?

Here's the contextual usage:

>While the chemical testing can detect milkfats, Copley said he didn't know exactly how the milk was being used.

However, he added, "when you consider how soon milk goes off, it's most likely they were making butter, cheese or yogurt ... which actually keep a long time." <