On Sunday, September 4, 2016 at 8:04:30 PM UTC+1, wrote:
> I made a pot of pasta sauce/gravy yesterday and put it in the fridge overnight
> to meld the floavors together as I always do, intendint on using it for dinner
> tonight. Somethiing came up and I won't be using it until tomorrow night. Is it
> safe to leave a tomato based sauce too long in a non-stick pot? Seems to me I
> once heard not to do that in an aluminum or metal pot but this is lined with
> non-stick.Thanks.

I left a pan with curry sauce (covered)in a cool larder for 36 hours. I reheated it and felt very queasy the next day. This was a copper pan so possibly something leached from the metal?