In Paleo eating they discourage buying processed meat, which includes sausage due to all the things they add to the meat that isn't good for you. So I used one of the recipes in one of my Paleo cook books to make my own.
I use 1 pound of pork and 1 pound of turkey plus a variety of seasonings and let me tell you it is heavenly.
I didn't know before specifically what Fennel Seed was, but I love it now! Extra fennel seed in the sausage recipe.