Cut roast into preferred size cubes. Place in a large oven proof skillet or dutch oven and brown in about 2 tbsp olive oil. As meat is browning add all dried spices and mix together. Dice poblano, carrots, onion, tomato, and celery and grate or mince garlic. Add to browning meat.
Once meat is fairly well browned add about 1-2 c of beef stock to skillet, cover tightly and place in 325° oven. Bake for about 3-4 hrs checking about half way through and add more beef stock if needed. Do not let all of the liquid cook out! You can thicken the broth with a flour and butter roux, or a cornstarch water mix, but we ate it with the thin broth straight out of the skillet.