How to make preserved eggs?

The method of making preserved eggs is as follows:

Egg10kg, water10kg, caustic soda 500-600g, black tea powder 200g and salt 400g.

First, we heated black tea powder with 3kg of water, boiled the tea soup, and filtered the tea leaves for later use. Then put the caustic soda into a jar prepared in advance, add 7 kilograms of water and stir it completely, then pour in the tea juice and salt and stir it evenly again. After these tasks are completed, put the eggs into it, press them under the liquid surface, cover them and seal them, and marinate them at 20℃ for about 65,438+03 days, then take them out and peel them for inspection.

If the protein is solidified and transparent, take out the eggs and soak them in the mixture of 50% feed liquid and 50% cold boiled water 10- 15 days. The concentration of feed liquid can be increased or decreased according to the solidification state of protein.