As soon as a trace of white appeared in the sky, Jiang Hao got up to collect the dew, which was the best time of the day to get fresh water.

He prepared several large conch conch today, and worked until the sun came out, Jiang Hao collected four conch fresh water, estimated to be about four or five liters.

Come to the coconut grove kitchen, open the fire, slowly blow the charcoal fire, and set up two pots, one for boiling water, and the other for cooking fish porridge for your breakfast.

After breakfast, Jiang Hao sent the boiled fresh water back to the cave for storage, there were already three cans, if you save drinking, these water is enough for a person to last for several days.

"It's fishing time, and I'm going to fill the cave with dried fish." Jiang Hao said in high spirits.

Just about to go into the sea with a harpoon, he suddenly saw two pieces of clothing hanging on the branches, a sweater and a shirt, which Jiang Hao had taken off when he had just climbed the island, and hung them on the branches.

It had been drying for two days, and it had already dried out, Jiang Hao wanted to take them off and put them back in the hole, but suddenly saw that there were many white particles on the sweater.

His heart was moving.

This is~~~

Salt!

He pinched down a white particle and put it in his mouth, the entrance was slightly salty, Jiang Hao was happy in his heart, it was really salt, he hadn't eaten salt for two days, and the feeling of salt grains in the entrance was really good.

He searched for the sweater, and soon found a pinch of salt.

People can't lack salt, if you don't eat salt for a long time, you will be weak and have a lot of problems, because you have just escaped from danger in the past two days, you haven't taken care of these, he will definitely have to live on the island for a long time, and it is very necessary to get some salt.

Jiang Hao thought about it, he is not short of food now, well, the fishing plan has been put on hold for the time being, and today's job is to make salt.

He had seen several ways to collect salt in the wild in the wilderness survival book, and now that he was on the island, he naturally extracted sea salt.

Set up the pot and stove,

Find enough wood.

Jiang Hao made a wooden shelf again, ran back to the cave, took the lady's gown, folded it a few times and fixed it on the shelf.

Take a conch and bring seawater in the sea.

In the first step of filtration, the seawater passes through several layers of yarn to filter out sediment, debris, seaweed, insect eggs, etc., and directly falls into the shell pot and begins to boil over high heat.

He now uses the simplest method of boiling sea salt.

As the boiling seawater evaporates, a layer of white crystals is left on the shell, which is the original salt, also known as coarse salt.

Jiang Hao picked up a piece and licked it, spit out twice, it was salty and astringent, and the taste was really bad.

Jiang Hao knows that most of the coarse salt is sodium chloride, that is, salt, but it also contains barium chloride, magnesium chloride, calcium chloride, magnesium sulfate, calcium sulfate and other chemicals.

Jiang Hao smashed the coarse salt into powder, made some plant ash and mashed it into it, and then added fresh water to stir and dissolve.

Some plants, especially those that grow in saline-alkali land, can absorb more sodium ions in the soil, and the ash burned from them contains more alkali, and the addition of plant ash can react to remove some chemicals in sea salt, especially toxic components.

Then filter and boil again, add carbon ash like grass and trees, react, filter, and boil again, so three or four times, and finally the salt obtained has lost its original bitterness and is basically edible.

Although there are still some chemical components remaining, the damage to the human body has been reduced a lot.

Now the conditions are limited, and this can only be the case.

In ancient times, many people from generation to generation ate sea salt directly, didn't they just come over like that?

And he is not going to use these salts to stir-fry vegetables directly, but only for pickled fish, most of the pickled fish on the market now are coarse salt, and some small dried fish on the market are even boiled directly with seawater as soon as they are caught, and then made into dried fish.

I didn't see a few people who ate to death.

After a whole day of work, Jiang Hao finally collected the salt of a conch, about three or four catties, the salt grains were blackened, which was mixed with carbon ash, so Jiang Hao named this salt "black salt", which was enough for him to eat alone for a long time.

Dinner was usually fish soup, but because of the salt, it tasted much better than before, and he lay on his stone bed, and there was a conch on the stone wall, which was full of black salt.

"I have taken a big step towards civilization, and it seems that I am not far away from running to a well-off society." Jiang Hao smiled, yawned and fell asleep.

The next day,

As usual, he gets up early to collect fresh water, which is already his unstoppable job, and it will continue to be in the future.

After breakfast, Jiang Hao took the harpoon and dragged the life raft to the sea, busy with his work, maybe he was unlucky today, he only caught two fish, both of which were not big, only two or three catties in weight, did he have to go home empty-handed today.

Seeing that it was already noon and the sun was full, Jiang Hao was about to go back, but just as he was rowing back on the life raft, he suddenly saw a black belt appear on the bottom of the sea, and he was pleasantly surprised when he looked closely.

Crab moves!

During mating and spawning season, or in pursuit of food, crabs will flock to each other and move from one place to another.

He plunged down and swam slowly towards the group of crabs, and now, he was the one standing at the top of the food chain, and it was all his food, countless crabs, and he could pick whichever he wanted.

Jiang Hao picked up the biggest hand, these big blue crabs, the largest kind weighed two catties, Jiang Hao swam past the crab and didn't run, stood up and waved the big pincers, putting on a defensive posture.

But their level of defense couldn't prevent Jiang Hao with tools in his hand, the spear stabbed out, and after a short time, three or four big crabs were strung together, and after they surfaced, they threw the big crabs onto the life raft, continued to dive, and after three or four trips back and forth, Jiang Hao caught more than a dozen big crabs.

Looking at the crabs in the life raft, Jiang Hao stopped.

Crabs are not like fish that can be made into dried fish, which is very difficult to preserve, and crabs are cold, so they can't eat more, there are more than a dozen crabs, which is enough for him to eat today.

Back on the beach, Jiang Hao dragged the life raft ashore.

Start preparing lunch.

Fill the shell pot with seawater, throw the crab in, and boil the crab directly in seawater.

Fishermen in the sea, often use seawater to boil shrimp and crabs to eat, boiled seafood with seawater that is fishy and delicious, in the past, on the seaside, when seafood is cheap, often someone helps to cook seafood, is the use of seawater, even now, some tourist cities can still see this way of eating.

The crab cooks in 10 minutes.

Jiang Hao couldn't wait to pick up a big crab, and opened the back cover to reveal the crab roe inside, which was really fat.