2-3 hours is better. There is sand on the skin of the shark. Then wash off the sand while it is hot and fry it again. You can also steam it in some water for 2-3 hours, which is better. Spicy fried shark intestines is a delicacy made with shark intestines as the main ingredient. Note that if the taste is fishy, ??it should be soaked in water with rice wine to remove the fishy smell.