Unlike diner-style omelets bursting with cheese, meat, and vegetables, French omelets are rolled, not folded, over minimal filling. Served for breakfast or as a light lunch or supper with a salad, a golden-hued, Gruyere-laced French omelet is elegant and satisfying. Because making these omelets is such a quick process, America’s Test Kitchen recommends having all your ingredients and equipment at the ready.