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Given the background description of some cooking related query, summarize the question into a title

I've seen them shaped like a rugby ball (but longer) but geometrically can't see how a circle can be folded into such a shape.I've also ordered French omelettes from menus before and they weren't pinched in at the ends.Is there a classic shape, or is a French omelette just one that is not set as much with no browning?
Output:
What shape is a French omelette and how is it achieved?