This is my "trademark" recipe--I make it every single week! It is so rich and flavorful I like it more than "traditional" chicken soup. Although the secret ingredient--sassafras--isn't essential, it deepens the flavor. Powdered sassafras leaves can be found in supermarkets in the spice section. It's also called "fil'e" or "gumbo fil'e." If your market has a "Cajun" or "Creole" section, you might be able to find it there too. It's a classic Cajun seasoning, but it's also good in just about everything.