Can Coffee Go Off?

[Quenched]

For some reason the coffee in our kitchen jar that has a lid looked all black and off looking, but its not been in there that long. 

 

Can coffee unexpectedly go off? 

[ToraToraTora]

I've seen mould growing on it so I'd say it can. 

[davebro3]

I've not seen that - how old is it? Maybe insects/fungi got in. 

[douglas9401]

If it's instant then the container hasn't been airtight.

[Old_Geezer]

Sounds like instant. If so you can break it up and use it.

[douglas9401]

Far be it from me to disagree, 😄, but no, you can't. Tastes revolting.

[Old_Geezer]

Had it many times.  You must buy a brand you don't particularly like.

[gingejbee]

If it's instant granules...it hasn't "gone off"...it's got rather damp. It will be safe to use, but will taste unpleasant.

[Samuraisan]

Chuck it out.

[Quenched]

Its just instant gold coffee, but gone black and stuck together. Its a proper kitchen coffee container with lid, so should be sealed. Just baffled why its done this, never has coffee do this before. 

No conditions have changed. 

 

 

[douglas9401]

Your container has failed.

[johnk]

Have you used a damp teaspoon to take coffee out.

[barry1010]

Agree, it's got damp. Change your coffee container.

Was it washed recently? Could have been damp when it was refilled

[Quenched]

barry1010, 

Its a possibility I suppose, but its a fairly new set, so I can't see how it would have got damp. 

The coffee just seemed to go black overnight. 

[Barmaid]

It is heat changing that causes condensation. The slightest bit of moisture and the granules soak it up. Best to keep it in the original jar.

[Quenched]

Barmaid, 

Yeah just seems a shame, we bought an expencive set too.