So I'm rooting around the pantry for some ranch dressing (Neuman's of course) for my chicken bits and came across a box of instant mash potatoes that is open and probably 6 to 9 months old. the flakes looked fine and their were no bugs so I cooked some up. As you can see it all looks normal. The right consistency and all. (the yellow tint is because I like to throw in a lot of butter) But it taste off. It's that "you can't quite tell if its you or if it really taste funny" kinda taste if that makes sense. So does this shit go bad? Am I going to have a tummy ache the rest of the day?