If there's one thing that I love about fall, it's soup.  I love eating it.  I love making it. I love the way it entices my kids to eat vegetables that would otherwise sit lonely and unloved on their plate. Soup melds flavors. Soup offers comfort. Soup warms the soul.     I was first introduced to Italian Wedding Soup when a southern neighbor brought over a pot of it shortly after the birth of my third child.  Strangely, she wasn't Italian and no one was getting married.     The name, it turns out, is a mistranslation of the Italian phrase, " si sposono bene" , meaning that two things are well married.  The marriage of the greens and meat in clear broth is such a delightful combination that it was widely described as  si sposono bene .     There are hundreds of variations on the recipe, but the soup usually contains greens such as spinach, escarole or broccoli rabe, meatballs, and tiny pasta in a chicken broth.     Here's my take with turkey meatballs (for...