Pollo Deshebrado en Salsa VerdeShredded chicken with spicy tomatillo sauce is a favorite filling for burritos or tacos. Burritos are a northern Mexico preparation, especially in the state of Sonora. Burritos are often made of large, thin flour tortillas. Chicken, beef and pork are the most common fillings. Shredded or chopped meats are layered with beans, salsa, lettuce, and whatever else strikes the fancy, then rolled into a cylinder and eaten at once. This shredded chicken can also be used as a filling for tamales.