I have had a tub of palm sugar for a while now, and it seems to have turned into a syrup consistency.
The sugar is in a sealed plastic pouch inside a plastic tub.
Is it still okay to use ?

i dont think sugar really goes off its a preservative after all like salt but how long after the use by date is it? a few months i wouldnt worry but a few years id chuck it.

I've just had a look.
"Sell by date = MAY 2010"

I suppose I'd better chuck it out eh ?

best be on the safe side aye

D'oh !
More money down the drain !

next time just freeze it if you have left overs that way it does last years pretty much, i freeze loads of stuff but then again i can be a cheap bastard

Don't you find this is the case with all these 'special' ingredients? I love Thai/Mexican/Chinese etc but quite often you need one tablespoon of a certain ingredient and then never find the need for it for months by which time it's gone off, this type of ingredient is usually expensive too!

Did you not open it to taste it?