Very few people who have eaten my cooking realize that I am an expert chef. My topic today is flipping the omelet. Never flip an omelet from the center. Always flip from the side. If you are right-handed, flip from the left side. If you are left-handed, flip from the right.
Never flip from in to out, flip out to in if you must. Never flip from back to front or front to back. It just confuses the omelet, not to mention the cook.
These instructions apply to many areas of life, especially where butter is involved.