The company started as a traditional donut shop, selling doughnuts and coffee. Later, they added flavored coffee and iced coffee. They also began to sell breakfast sandwiches: these contain egg, cheese, and pork (bacon, ham, or sausage), on bread (bagel, croissant, or English muffin). With the addition of breakfast sandwiches, Dunkin' Donuts has since become a popular spot for a quick breakfast. 