1, not enough time to kill.

2. The egg has gone bad.

3. electric egg beater is broken.

How to send egg whites:

1, pour the egg whites into a small basin, which must be free of water and oil, take out the eggbeater, clean it, and be sure to dry the water before use.

2. Add sugar to the egg white and stir it back and forth until the egg white swells to twice its original size and becomes creamy.

3. Add lemon juice or white vinegar, stir well again, and then use it for baking. Don't delay too long, or the egg white will foam.