Dunkin' joins fast-food breakfast wars with new breakfast tacos.

Dunkin' has added breakfast tacos to its menu, available in two varieties, with or without bacon, and come with scrambled eggs, melted white cheddar, roasted corn, and lime crema. The tacos are available during all operating hours for a limited time and come in a "convenient Dunkin' taco holder." The move comes after Taco Bell announced strong fourth-quarter earnings driven largely by its breakfast sales, which included burritos and quesadillas made with combinations of eggs, cheese, steak, bacon, or sausage, among other items.