The recipes call for a few ingredients you might not have in your pantry. You could substitute a high-quality balsamic vinegar for the vincotto in both recipes. For the garlic confit in the Eggplant Dip, you can substitute roasted garlic.
Za’atar is a Mediterranean mix of spices and herbs usually including thyme, sesame seeds, sumac and salt. You can make your own or find it in stores that carry Middle Eastern groceries. You can often find it on the “international” shelf of a well-stocked grocery store.