I have a T-fal pressure cooker (belive it's out of stock now--i bought it on clearance at Sears a few yrs ago). I use to make chicken soup to ward off disease this season :) I've been storing it overnight (for several days) in this same pot, I refrigerate the whole thing...is this a no-no? I do have pyrex, but it is taken up with other stuff. (busy mo coking ahead for a whole week!). Thanks for any thoughts. I worry often about stuff leaching into food, so I hope I don't have another problem in my hands.