1, fresh jellyfish contains a lot of water, thick skin and toxins. Fresh jellyfish can only be dehydrated after repeated washing with salt and alum, so that the toxins in seafood jellyfish can be discharged with water.
2. Jellyfish is reddish or yellow, with uniform thickness and toughness, which can't be squeezed out by force. This jellyfish can be eaten.
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Matters needing attention
It can be eaten by the general population, and is especially suitable for patients with yin deficiency, dryness and heat, phlegm-heat cough, dyspepsia, constipation, excessive drinking after drinking, acute and chronic bronchitis and hypertension. However, people with spleen and stomach deficiency and cold and allergic constitution should not eat it. It is inedible after decay and deterioration. Jellyfish should not be preserved with sugar. Fresh jellyfish contains a lot of water, thick skin and toxins, so it is inedible. It needs to be marinated with edible salt and alum (commonly known as alum) for three times, so that fresh jellyfish can be dehydrated for three times and toxins can be discharged with water.
Baidu encyclopedia-jellyfish