Why are preserved eggs black?

Black preserved eggs are made of duck eggs.

There are two kinds of preserved eggs: one is yellow preserved eggs; One is a black preserved egg. The color of preserved eggs is related to its composition. The difference between yellow preserved eggs and black preserved eggs lies in the different proportions of lead powder, tea, quicklime, soda ash, salt, charcoal ash and pine and cypress branches.

1, yellow preserved eggs are mostly made of eggs, with less egg white and yolk components and short storage time, which is called "preserved eggs".

2. Black preserved eggs are mostly made of duck eggs. Egg white and yolk have heavy components and long storage time. Adding pine and cypress branches to the ingredients is called "preserved egg". There is no problem with both kinds of preserved eggs, so you can eat them safely.

The practice of cold cucumber preserved eggs

Main components; Three preserved eggs, one cucumber, four millet peppers and one onion.

Accessories; Hot oil 10g, salt 2g, minced garlic 15g, chopped green onion 10g, soy sauce 10g, vinegar 10g.

1. Slice cucumber with slicer.

2, gently roll up along one end, if easy to spread, can be fixed with a toothpick.

3. Put the rolls in the middle of the plate.

4. Cut the preserved eggs into four petals with thread, and replace the kitchen knife with cotton thread. The preserved egg is intact, and the yolk will not open three times.

5. Then prepare the sauce: put garlic, shallots and millet into a bowl, pour in hot oil, add soy sauce, vinegar and salt, and stir well.

6. Put the preserved eggs into the plate, pour the sauce on the preserved eggs and cucumbers, and enjoy them beautifully.

7. Finished product map of cold cucumber preserved eggs.

The above contents refer to Baidu Encyclopedia-Preserved Eggs.