PepsiCo manufactures and distributes nonalcoholic beverages, grain-based foods, and a variety of snacks. Its key brands include Pepsi, Gatorade, Mountain Dew, Tropicana, Quaker, Lay's, Doritos, and Cheetos. The firm receives a slight majority of revenue from food, with Frito-Lay North America (around one fourth of sales) contributing above 40% of operating profit. It distributes its products through direct-store-delivery and customer warehouse systems, as well as third-party networks. Pepsi generates 57% of its revenue in the United States.