All the flavors of the Southwest are in this delicious Beef Burrito Filling. Oftentimes, toward the end of cooking time, I allow all the water to evaporate, then caramelize the bottom of the roast. After removing the roast and the vegetables, I add about 2 cups water and scrape up all the tasty bits left in the roaster. I add about 1 1/2 cups of this to the shredded beef. Additions to the tortilla Add plain cooked rice or Mexican Rice to the tortilla. Add refried black beans to the tortilla. (I use LaSierra Refried Black Beans. They’re fabulous, and they don’t contain any risky additives.)