This is one of the skills of professional and experienced chefs. To prevent the eggs from being crushed and crushed when cutting the boiled egg into rings, have a glass of ice water ready, dip the knife in it regularly to cool, then dry it with a towel and dry the eggs. take. This way the cuts will be healthy. This trick will also work for cutting sticky desserts like caramel desserts. On the other hand, for cutting cold cakes or ice cream, you can use the same method this time with very hot water!