What is Italian omelette not folded?

"Italian omelette not folded" is a bit of a misnomer. It seems you're describing a fritatta, which is a type of Italian egg dish that is similar to an omelette but isn't folded.

Here's the key difference:

* Omelette: Eggs are beaten, cooked in a pan, and then folded over to enclose a filling.

* Fritatta: Eggs are beaten with cheese and other ingredients, cooked in a pan until set, and then often baked in the oven until puffed and golden.

Frittata can be made with a variety of ingredients like vegetables, cheese, meats, and herbs. It's often served for breakfast or as a light lunch or dinner.

So, while not technically an "omelette," a fritatta is a delicious and popular Italian egg dish that is similar in concept but cooked differently.