Of course, this alone is not enough. Because, natural sodium saltpeter may also contain impurities such as magnesium ions and calcium ions, which are difficult to separate.

Therefore, it needs to be further processed. For example, Ma Lin remembered a good way for the Ming Dynasty to purify saltpeter - saltpeter and radish were boiled together. Then, the adsorption of radish is used to further adsorb and remove magnesium ions and calcium ions to achieve the purpose of purification. Saltpeter treated in this way is not easy to deliquescent. If it is stored in a sealed oiled paper bag, it can be stored for a long time......

"yes, I almost forgot about the turnips!"

Marin patted his head and remembered the sacks of radish seeds he had brought back. This is an artifact, not only can purify saltpeter, but also remove the smell of goat's milk, absolutely all-round.

It just so happens that in late spring and early summer, you can still grow turnips. After all, radishes have a very short growth cycle, only two months. After two months, a large number of radishes will be produced.

Radish not only has a short growth cycle, but also has a large yield. Especially the large white radish, the yield per mu can reach 10,000 catties. Of course, the white radish varieties of this era may not be so strong, and the yield per mu is not so high. However, it is still no problem to produce two or three thousand catties per mu.

Moreover, radishes can be planted for two or three crops a year, and the total yield is higher. Compared with potatoes and sweet potatoes, radishes are the overlords of the production world.

But unfortunately, radish can't be used as a staple food, otherwise, you can crush potatoes and sweet potatoes.

However, although it is not a staple food, it is also a very good vegetable. Ma Lin remembered that before the rise of greenhouse vegetables in the north, he relied on Chinese cabbage and radish as vegetables in winter. Every winter, the vegetable cellars of the northerners are full of cabbage and turnips.

Moreover, radish can also be pickled into salted dried radish, which can be stored for a long time as a supplementary food for staple food. For example, when drinking porridge or nibbling on steamed buns, it is also good to eat some dried radish.

In fact, because there are no turnips and Chinese cabbage in Europe, in winter, there is a great shortage of vegetables. Marin thought about it and decided to vigorously promote the cultivation of radishes and Chinese cabbage in the North Sea Country (he also brought back a lot of Chinese cabbage seeds).

Marin then asked Angela to send someone to reclaim a large area of wasteland for growing turnips and cabbage.

At the same time, each estate is divided into a small area for the cultivation of radishes and Chinese cabbage.

In this way, in the future, the serfs of each estate will be able to eat Chinese cabbage and radish in winter, two vegetables that can be preserved. If you really can't do it, you can also pickle radish into salted dried radish and pickle Chinese cabbage into sauerkraut. For the specific pickling method, Ma Lin has brought back two women from the Ming Dynasty to guide farmers in pickling dried radish and sauerkraut.

……

In fact, radish can be used for more than just purifying saltpeter, absorbing mutton flavor, and being used for cooking or pickling.

Because, radishes can be grown almost three or four seasons a year, and the yield is large. In addition to the value of the radish itself, the leaves of the radish themselves are also a vegetable that can be stir-fried. Alternatively, it can be used as green fodder to feed livestock.

In fact, eating radish leaves is also popular among modern talents. In the past, farmers generally disdained to ask for radish leaves, and they used them to feed pigs.

In any case, radish leaves are very useful as vegetables or as feed livestock. Moreover, because radishes can also be harvested before winter, they can not only be used as vegetables for people, but also for livestock to replenish a wave of fresh green fodder. After all, there is no green fodder to eat in late autumn and before winter. Being able to eat some fresh radish leaves is also a VIP treat for livestock.

……

Because the spring ploughing had long passed, Marin asked Angela, in the name of the mother of the North Sea Kingdom, to gather a large number of serfs to reclaim wasteland, or find open space in the manor under the name of the Hoffman family, and plant turnips and cabbage.

In fact, Chinese cabbage, like radish, grows fast and yields the same amount. The growth cycle of Chinese cabbage is also about two months, and the yield per mu is also several thousand catties. Even in this era, there is no problem with a yield of two or three thousand catties per mu.

Marin didn't know how much shock he had brought to the European turtles in 16th-century Europe, where the yield per mu was only 100 catties......

Later, the North Sea Kingdom and later England competed to grow Chinese varieties of radishes and Chinese cabbage. These two vegetables have also become the most important vegetables in the North Sea Kingdom and the United Kingdom.

Moreover, there is a story in Germany and England about an uncle named John who walks into a small restaurant and shouts, "Mary, serve sauerkraut!" Then he shouted, "Another plate of dried radish, it needs to be spicy!" ”

Then, later generations of southern Europeans, when spraying the Germans of England and northern Germany, would say - "Hey, those Northerners who grew up eating sauerkraut and dried turnips"......

Hundreds of years later, Germany's most classic dish is not sausages, but sauerkraut and dried radish. When the Chinese northerners traveled to Germany, they felt so cordial that they almost thought they had returned to their hometown......

……

In addition to a lot of radish and Chinese cabbage seeds, Marlin actually brought back a lot of ready-made dried radishes and sauerkraut. As for fresh radishes and Chinese cabbage, Marin didn't have them. Because, he sailed through the tropics, and fresh turnips and Chinese cabbage could not be preserved. So, he had to come back with some seeds. As for the finished product, I only brought a few jars of sauerkraut that is said to be pickled in the old altar, as well as a lot of salted radish.

However, these salted radishes are not very delicious because they did not have chili peppers (there were no chili peppers in Daming before). But sauerkraut is very popular with Marlin, because, when cooking, Marlin can add a little pepper and ginger to it.

Because it was boring to hide in the secret house, when Marin was fine, he called Kohler, Schwartz and others, plus himself and Kahn, to cook a pot of sauerkraut fish in the house, get some skewers, and bring a bucket of dark beer over, while eating sauerkraut fish, skewers, and drinking dark beer, not too cool. However, because they all get together at night to eat sauerkraut fish, skewers and drink beer, Marin obviously feels that his belly has grown bigger these days - obviously, this way of eating and drinking is too easy to gain weight......

As a last resort, after eating and drinking with Kohler every day, Marin did not dare to sleep immediately, but ran in circles in the large courtyard of the house to burn off his energy. Otherwise, the general's belly will come out.

And the sauerkraut fish he "invented" quickly became popular in Beihai country. First of all, after Kohler and Schwartz and others ate sauerkraut fish, they took a lot of sauerkraut from Marin and cooked it themselves.

Later, sauerkraut fish became a famous dish in Germany, and its reputation was comparable to that of truffles and foie gras in France. Then, this practice was passed back to Huaxia and became a famous dish in the town of Western restaurants......

When many ABCs enter Western restaurants, they snap their fingers and shout:

"Aiter, bring me a German-style sauerkraut fish!"

…… (https:)

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