Songhua egg, also known as preserved egg, changed egg, gray bagged egg, etc., is a kind of Chinese traditional egg product. The main raw material is duck eggs, fresh and smooth taste, 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.
What is the difference between leaded and unleaded preserved eggs?
How to buy preserved eggs
The preserved eggs on the market are divided into lead preserved eggs and lead-free preserved eggs, and consumers should choose unleaded preserved eggs. Because the consumption of lead preserved eggs can lead to lead poisoning, affecting hematopoiesis, nerve conduction and cognitive ability, prone to dizziness, irritability, attention to loose, hyperactive anorexia, mild anemia. How to identify leaded and unleaded preserved eggs? The surface of the leaded preserved eggs has a darker surface and is dark gray. Egg body surface is heavily contaminated and difficult to clean. There are many lead spots on the surface, commonly known as gold powder spots; the surfaces of unleaded preserved eggs are smooth and bright, with less lead spots. Eggshells are oiled and clean. Buy preserved eggs are generally through the "one view, two trips, three shakes, four shots" method.
One view: Watch whether the preserved eggs are intact and whether the shell color is normal. Damaged eggs, cracked eggs, black shell eggs, and relatively severe brown plaque eggs are generally classified as inferior eggs and should be removed.
II: When you put a preserved egg on your hand, gently throw it away two or three times. If you put it back into your hand and feel elastic and have a heavy feeling, you can judge it as a quality preserved egg, and vice versa as a poor quality egg.
Shake: Hold the ends of the preserved egg by hand, shake it up and down, shake it around several times, and listen to the sound of water or impact. If there is water noise, it will be broken shell inspection, such as protein, egg yolk liquid state is inferior.
Four shots: When viewed through the light, if the inside of the egg is mostly black or brown, a small portion of the egg is yellow or light red for quality eggs. If most or all of them are brownish transparent and have blister shadows turning back and forth, or dark red at one end, or even a clouded black solution inside, it is a poor quality egg.
Can a lead-free preserved egg be eaten with confidence?
The “lead-free preserved eggs†are not lead-free, but the lead content is much lower than before when the process is improved. Although it has little impact on the health of adults, it is best for children to eat less or not. Eat, because children are very sensitive to lead, the absorption rate in the intestine is as high as 50%. Some people have detected Bacillus subtilis and mold in preserved eggs, so when eating preserved eggs, add vinegar, ginger, garlic, etc. The second is that it can be sterilized. The bacteria on the preserved egg may come from the mud and clam shell that surrounds the egg body. Therefore, if the preserved egg is damaged, it is unfit for human consumption. In addition, the preserved egg is not suitable for long-term storage, excessive water evaporation, and the preserved egg will be hard. Such as rubber and not digestible.
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