English example sentences with "frittata"

What's the difference between a frittata and an omelet?
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After conducting a great deal of research to keep her recipes on budget, she drew up detailed charts listing the per-serving cost of every ingredient. “It was a lot of work,” Kahn says. “I enjoy it because I enjoy numbers, but your average person is probably not going to do this.” But it helped her come up with meals which were healthy, tasty, filling and cheap. One recent dinner, a potato-zucchini-egg frittata cost about a dollar per serving.
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