All the measurements can be customized as per your choice. I used 2 whole eggs & only the whites of other 2 eggs. I used low fat milk. This makes it healthier. While greasing the pan for frying, be a bit generous, it will help you flipping the omelet. Also make sure that you don't crowd the egg base with toppings, otherwise it will become heavier & difficult to flip. You can also add other veggies of your choice like mushroom, capsicum etc; I used basil & garlic & parmesan cheese as the additional seasoning.