I have had trouble in the past folding the omelette thrice. So I don't do it. The omelette is left in the pan, a lid put on until the egg is no longer runny, and the cheese melted. Then I slide it on the plate and when the omelette is halfway on the plate, I just flip the pan over so that the omelette folds in half. It works for me. This morning I had leftover asparagus, sauteed mushrooms and swiss cheese in an omelette. It was really good. It did need a dab or two of hot sauce.