1, the formula and raw materials of preserved eggs are: duck eggs 500g, quicklime 120g, edible alcohol 30g, soda ash 30g, salt 20g, garlic paste 3g, black tea powder 4g, zinc acetate 10g, and water 550g.

2. Preserved eggs, also known as preserved eggs and preserved eggs, are a unique food in China, which has a special flavor and can stimulate appetite. The principle of making preserved eggs is that the characteristics of protein gel can be changed into elastic solid by using eggs in alkaline solution.