According to Kyushu Drunk Catering Network, it usually takes 15-20 minutes for Portunus to cook in white water. But the specific cooking time depends on the size and quantity of Portunus trituberculatus. If the size is large and the quantity is large, it is necessary to extend the cooking time appropriately. In addition, September is the best time to eat female Portunus, and it is suitable to eat male Portunus after 10 every year.