2 lbs flank steak, trimmed of all fat
1 1/2 teaspoons salt
fresh ground pepper
3 teaspoons vegetable oil (for marinade)
1 cup coarsely chopped onion
1/2 cup diced celery
1 teaspoon minced garlic
4 small tomato
3 teaspoons oil (for frying)
2 cups water
12 ounces beer
1/2 teaspoon salt
1 teaspoon ground cumin
The next day, heat 3 tsp oil over high heat in a heavy Dutch oven and add the steak; brown it quickly on all sides without burning.
Transfer the steak to a plate and sauté the vegetables until they are soft but not brown.
Return the meat to the Dutch oven. Pour in the water and beer and bring to a boil.
Cover the Dutch oven and cook slowly for about two hours until the meat is tender. The last hour of cooking add the final ½ tsp of salt and the 1 tsp of ground cumin.
Finally remove the flank steak and put on an oven-proof plate. Top with onions, etc., and brown under the broiler.