Other common mistakes made while making omelets are flipping the eggs too soon or using too many eggs in the mixture. Figure on about one and a half to two eggs per omelet for a nice fluffy omelet and make sure that the eggs are nearly all the way cooked on thorough to the top before you flip the omelet. It’s tempting to put lots of different ingredients in the filling, but overloading the omelet will cause it to break, especially if it is too thick. Remember, the more filling, the less egg.