Here's one way to use the black kale that comes in your CSA share. It's a simple recipe that's good with sausages.
You cut the kale into thin shreds and cook it with fusilli or a similar textured pasta that can "catch" the kale shreds. You need a second pan to make a simple sauce of olive oil flavored with garlic and chili to add some zing, and then some grated Pecorino cheese to finish it.