1, egg white pots need to be completely dry;

2, egg whites add sugar, to help whipping;

3, add lemon juice, white vinegar or cream of tartar, to change the PH of egg whites, but also to get rid of fishy smell of eggs, and to help whipping;

4, the professional cake maker suggested that in the egg white is still present mucus-like add a pinch of table salt, so it is easier to

4.