Songhua eggs, also known as preserved eggs, modified eggs, gray eggs, eggs, etc., are a kind of Chinese traditional egg products. The main raw material is duck eggs, taste fresh and smooth, slightly salty, color and flavor are unique. Songhua eggs are not only loved by domestic consumers, but also enjoy a good reputation in the international market. After a special processing method, the egg will become dark and bright, and there are white patterns on it. When you smell it, there is a special fragrance and it is one of the people's favorite foods.

How did the pine flower on the pine flower come from? It was actually a chemical reaction.

The main chemical constituent of a protein is a protein. As long as the eggs are left for a long time, some proteins in the protein break down into amino acids. The chemical structure of amino acids has a basic amino-NH2 and an acidic carboxy-COOH, so it can act both with acidic and alkaline substances. So people are making pine flower designs and deliberately adding some alkaline substances such as lime, potassium carbonate, and sodium carbonate in the mud. They pass through the pores in the eggshell, combine with amino acids, and generate amino acid salts. These amino acid salts are insoluble in proteins, so they crystallize in a certain geometric shape and form beautiful pine flowers.

In addition, because the egg yolk of the preserved egg has a lot of protein decomposition and become amino acids, so the egg yolk of the preserved egg is much fresher than the egg yolk of the ordinary egg. Although the preserved egg is rich in nutrients and delicious, its alkaline is too large. Should not eat more. Some eggs have ammonia odor due to amino acid decomposition and other complex reactions to produce ammonia, it is recommended when eating eggs, add a little vinegar, vinegar can sterilize, but also to neutralize some of the alkaline egg, eat more taste.

How to eat preserved eggs

Since preserved eggs are preserved with a small amount of lead oxide or lead salt, they contain a small amount of lead (so-called unleaded preserved eggs are not completely lead-free). Eating more preserved eggs can cause lead to accumulate in the body, which is particularly harmful to children. Because children are more sensitive to lead, the absorption rate of lead may be as high as 50%. In addition, children's nervous system is not yet mature and is more susceptible to lead damage and affect mental development. Therefore, children should be avoided eating preserved eggs.

To prevent egg white poisoning, besides not eating spoiled, smelly or shelled eggs, shelled preserved eggs can be steamed at high temperatures for 5 minutes, cooled before serving, and preferably no more than two at a time. When eating preserved eggs can add some vinegar, ginger and garlic and other spices to achieve the purpose of sterilization. In addition, people with poor gastrointestinal function should be prohibited from eating.

"Pile egg tofu" is a rather scientific home cooking. Studies have shown that cellulose in soy products can inhibit the absorption of lead in the gastrointestinal tract of foods, and that the calcium ions can also resist lead, help to eliminate the human intake of lead, and help reduce the concentration of lead in human blood .

Eat preserved eggs are vinegar can detoxification

It is recommended that people who love to eat preserved eggs must eat more foods rich in dietary fiber, such as celery, coarse grains, etc., can absorb heavy metals in preserved eggs, reducing its absorption in the body. Also eat more green leafy vegetables, these green leafy vegetables contain a lot of vitamin C, can promote the excretion of heavy metals in preserved eggs.

There is also a good way to add some vinegar when you eat preserved eggs, not only can neutralize the alkaline ingredients in preserved eggs, improve the taste, but more importantly, the acidic substances can minimize the absorption of toxic substances in the human body.

Ginger eggs

Ingredients: preserved eggs, ginger

Seasonings: old vinegar, sugar, chicken, sesame oil

Making method:

1. Peel the stripped egg and cut it into pieces with an egg cutter. (You can also use a knife if you don't have an egg-cutting device. Apply a little sesame oil on both sides and cut the egg into six petals.)

2, ginger cut fine, into a small bowl, pour in plenty of old vinegar, amount of sugar, chicken, sesame oil, and mix well for about 10 minutes;

3, the ginger can be poured on the egg (like to eat chili can also add a little Kazakhstan).

Remove the rice husk, wash the preserved eggs and prepare the egg cleaver

Position, press down, six petals OK. .

Place a plate and pour ginger vinegar, and you're done!

Tips:

* You can use the thread to cut the egg, or you can apply thin oil on both sides of the knife as described above, and cut it to ensure the integrity of the cut.

* The preserved eggs are cold, so when eating, be sure to add some ginger and neutralize them.

* Adding some vinegar when you eat preserved eggs can not only neutralize the alkaline ingredients in the preserved eggs, improve the taste, but more importantly, the acidic substances can minimize the absorption of toxic substances in the human body.

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