Have you ever wanted to bake a carrot cake , but you don't have any carrots on hand? One person replied to a carrot cake recipe writing that she'd given kale a try instead. Do you want to guess the results? I'll tell you: it did not taste good. Recipe substitutions are understandable. Sometimes you're halfway through the dish, and you realize that eggs or olive oil aren't in your house. You went to the store, and the ingredients just slipped your mind. And now, you're covered in flour and the o…