Starbucks is the most successful project that sells millions of cups of coffee every day. Moreover, you can buy premium coffee types from its chain stores. In the U.S., Starbucks sells more than 10% of all ground coffee. The total number of Starbucks coffee shops worldwide exceeds 30,000.  Dunkin' Donuts has also gained popularity among Americans.  McCafe shows impressive results in terms of worldwide sales and deserves special attention. On the international market, a very large percentage of coffee drinkers prefer coffee at McDonald's.