Every day WikiAnswers.lists dozens of questions about whether it’s safe to eat the three-day-old quiche, or the raw chicken left on the counter. The problem is that every food is stored under different conditions, and this makes a huge difference in how long it keeps. Published guidelines tend to be conservative. If you follow them strictly you may end up throwing out good food.
I wrote up a list of things to consider when deciding about questionable leftovers. The list will help you think about the type of food and whether it was stored properly. But first, examine the food. Leftover food should always look and smell normal.
The list is also a guide for storing foods carefully in the future. You pay good money for your food, why throw it out because it wasn’t put away properly?