Cod is no longer a rarity.It is very rich in protein, vitamin A, vitamin D, calcium, phosphorus, magnesium, selenium and other nutrients. It has a good protective effect on the human cardiovascular system and is conducive to the health of the body. It is also known as “liquid gold” or “nutritionist on the table.”Because the value of cod is so great, it is one of the largest fish caught in the world, but it does not mean that all cod sold on the market are “cod”.