1. This is because the steaming time is too long. As a result, the egg itself has undergone some changes. Eggs contain sulfur, iron and other trace elements inside. If they are steamed for too long, trace amounts of ferrous sulfide may form. Turns slightly greenish black. The same is true when cooking hard-boiled eggs. Egg yolks that are cooked at the right time are yellow, but they will turn green over time. normal. It does not affect food consumption, but it affects nutrition because nutrition is destroyed. Remember to take less time next time.

2. Generally, if you use hot steam, the time should not exceed 10 minutes. If you start steaming with cold water, do not wait for more than 15 minutes and this will not happen.

1. The blackening of steamed eggs is caused by steaming the eggs for too long during the production process. Because the eggs themselves contain trace elements such as sulfur and iron, if the eggs are steamed for too long, trace amounts of ferrous sulfide will be formed, which will combine with oxygen in the air to form dark brown iron sulfide. If the eggs are steamed while the water is boiling, do not steam them for more than 10 minutes. If you start steaming with cold water, do not steam for more than 15 minutes.

2. How to steam eggs

Ingredients

150g eggs

5g cooking oil

3g salt< /p>

5g soy sauce

2g chives

Steps

Prepare all the ingredients.

2. Wash the chives and cut into chopped green onions and set aside.

3. Crack the eggs into the bowl.

4. Add a little salt, just a little bit, not too much.

5. Add a little cooking oil and beat the eggs with chopsticks.

6. Add 8 and a half eggshells of water.

7. Stir evenly and pour into the steaming bowl.

8. Cover with plastic wrap, put it into the pot and steam for about 10 minutes, until the surface of the egg condenses.

9. Take it out, sprinkle some chopped green onion, top with soy sauce and cooked oil.