Czech Republic: The "huspenina" or "sulc" (from German "Sülze") is made from pig's heads or legs boiled together, chopped, mixed into their own broth, poured into a pan, and left in the cold to solidify. Other ingredients include onion, pepper, allspice, bayleaf, vinegar, salt, carrot, parsley, root celery, and sometimes eggs. A similar product, "tlačenka", is basically "huspenina" with some more meat, chopped liver, and various offal, poured into a prepared pig stomach and left to solidify under the weight. "Tlačenka" is generally thicker than "huspenina," and it is commonly eaten with chopped onions and sprinkled with vinegar.