These rich little delicacies are another Austrian sinful delight. They are usually served in beef or vegetable broth topped with chives, but can also be served as a main course with salad. The original recipe calls for Graukäse, which is only available in Austria. It is very aromatic, some might even say stinky. You can substitute with alpine cheese, Gruyere, Munster Cheese, Raclette...anything very strong in aroma and taste. But when in Austria make sure to taste the "real" thing...it's heavenly.