"The trick to this wonderfully puffy souffléed omelet is to beat the egg whites until they form soft peaks, then fold them into the yolks...."
INGREDIENTS
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1/4 cup mild-flavored extra-virgin olive oil
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5 ounces watercress, chopped (5 cups)
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Salt
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Freshly ground black pepper
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6 large eggs, separated
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4 ounces imported Fontina cheese, shredded (1 cup)