USE BARBACOA RECIPE
AND PICKLED ONION RECIPEBUNS CAN BE CI
ABATTA, PANINI OR BAGUETTE STYLE
QUARK CHEESE OR FRESH MEXICAN CHEESE
CREMA, CREME FRAICHE OR SOUR CREAM
REFRIED BLACK BEANS
Place dried chilies on a microwave-safe plate and microwave on high power in 15-second increments until pliable and toasted-smelling, about 30 seconds total. Transfer to a 2-quart microwave-safe liquid measuring cup or bowl. Add 2 cups chicken broth, cover with plastic wrap, and microwave on high power until gently simmering, about 5 minutes. Remove from microwave. Add soaked chilies and their liquid to the blender along with fish sauce. Start blender on low and slowly increase speed to high. Puree until smooth, about 1 minute. Set aside.
Place beef chuck in slow cooker. Add all remaining ingredients. Ad enough beef broth or water to cover. Cook High for 8 hours