Basic salt use

Salt has many uses besides seasoning, some other main uses include.
【Antioxidant】

to prevent discoloration of food
(0.5% saline).
(Example) Preventing「apple」discoloration.

【Preservative】

Defusing water by spreading salt over food.
(Example) Mackerel in vinegared dressing=water comes off of mackerel after spreading salt. The process takes the fishy smell and tightens the meat of the fish.

【Antiseptic】

Salt draws water out of food, dehydrates it and prevents bacterial growth.
(Example) salted pig, salted mozuku seaweed.

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