Last St. Patricks Day I bought 2 prepackaged vacuum packed Corned Beef. I ate one before the expiration date (June 2006) but am only getting around to the second one now. It has always been refrigerated. It looks perfect through the clear plastic backside of the package. It is corned which is an ancient method of preserving meat. Is it safe to cook for 2 1/2 hours and eat?