In 2004, my husband and I spent a weekend in Chicago to celebrate our first wedding anniversary. It was a chilly, windy October morning when we ventured from our downtown hotel to see the sites. We arrived at the Navy Pier cold, tired and hungry. Little did I know that the steaming hot roast beef sandwich I ordered from an Italian vendor there would be one of the tastiest lunches I had ever had. Here is my version of the awesome sandwich I had that memorable day. *Chef's Note*: Don't let the addition of giardiniera scare you. You can use more, or less, to taste. But don't leave it out completely, because it adds so much flavor and just wouldn't be the same without it!