How to make lead-free preserved eggs?

Materials?

20-25 duck eggs/eggs

Water 1000 ml

50 grams of salt

52.5g of food-grade sodium hydroxide powder (caustic soda)

How to make a lead-free preserved egg technical sticker?

Add a liter of water (1000ml) to a large plastic bottle (preferably not a glass bottle, because alkaline substances will corrode glass). Salt and caustic soda powder. Sodium hydroxide is a strong alkali, so be careful when operating, and it is better to wear gloves, especially those who wear glasses for myopia.

Fill a bottle with 10 eggs and pour the prepared solution. Fill it up.

Cover and leave at room temperature. Leave it alone and let protein solidify.

You can shine a flashlight on the eggs and observe the ripening process of preserved eggs.

Eggs that have just been added with lye are transparent.

Two weeks later, the yolk turned black and protein turned pale yellow.

After three weeks, the color of yolk darkened and protein turned brown.

Preserved eggs mature in about 2 1 day to 28 days. This is an egg that has been soaked for 24 days.

Eat as soon as possible, or keep it sealed and oxygen-free.

skill

Don't move the egg after putting it in the bottle, and it is not suitable to turn it over. The ambient temperature should be kept at around 20℃ (room temperature with air conditioning and heating is enough). After curing for 2 1 day, it can be opened for viewing. If the protein solidification is transparent, the solidification is normal. If protein rots, it means that the feed liquid is too alkaline. You can dilute the lye with water. If the protein becomes soft and shapeless, it means that the lye is weak. You can add a little alkali or extend the curing time.