We've all experienced it. You're reading a recipe in a book, or one you've downloaded, or even something a friend scribbled on the back of a napkin, and suddenly come across an ingredient or instruction that just makes no sense. This afternoon I came across what is, perhaps, the ultimate. I was cruising one of the books sent me to review, and among the ingredients in one recipe was: 1/2 large egg. Anybody know how you halve an egg? And how do you store the half you're not immediately using? Obviously, I'm not going to attempt that recipe. But it got me to wondering: what are some of the worst recipes you've looked at? I'm not talking about ones that didn't turn out tasting well, but those whose ingredient lists or instructions really left you scratching your head.