Sliced Rays are the top ingredients in Jeolla-do, South Korea. The most special thing is that it will ferment by itself, and then it will give off a strong pungent ammonia (the smell of toilet), which is also commonly known as ammonia flavor. Although it smells bad, the local people can't put it down. It is said that its smell is 5 times that of kiviak and 14 times that of natto, which are necessary delicacies for important festivals such as weddings, funerals and celebrations.