Suppose How to make a perfect omelette<br>Crack the eggs into a bowl and whisk until well combined. Heat a non-stick pan over medium heat and add a little bit of butter or oil. Pour in the whisked eggs and let them cook for a few minutes until set. Add desired fillings, fold the omelette in half, and serve hot.
Can we infer that "Adding fillings before cooking the eggs is a common practice in making omelettes"? Yes, no, or maybe?