Mushroom Swiss Cheese Brats will be a great addition to your next tailgate party. The fresh, authentic Mushroom Swiss Cheese bratwursts are some of the most delicious brats available. This is a classic pork bratwurst with sliced mushrooms and real Wisconsin Swiss Cheese added to a natural casing. Chooses a 6 lb. or 9 lb. box of brats. One of Wisconsin's favorite foods, Bratwurst!