I never had. Until this past weekend at the flea market. We were admiring a vendors green eggs...$1.50, free-range mind you, and she began to tell me how they "can" their chickens instead of the freezer. Claimed a three to four year shelf life. I've never heard of such a thing. How about you? **My wife had never seen a real green egg before. Said it was cute but she didn't think she could east one? I told we aren't supposed to eat the shell... *** An aunt married into our family some many years ago. Pretty woman but not the best cook. She made a cake, but it was crunchy...when asked why, she explained the directions called for "whole eggs" so she used the "whole egg"...including the shells. Yeah, she was from the north.