Beef with grain

1 4-to 4 1/2-pound flat-cut (also called first-cut) beef brisket, trimmed of most fat 2 tablespoons olive oil 1 14 1/2-ounce can diced tomatoes in juice[...]

1/2 cup fresh lime juice 1/2 cup chopped fresh cilantro 1/2 cup olive oil 1/3 cup soy sauce 1/4 cup tequila 7 garlic cloves, finely chopped 2 teaspoons grated[...]