Beef with vinegar

1/2 cup toasted dry breadcrumbs 2 tablespoons olive oil 1/2 medium onion , diced 6 garlic cloves , minced 2 teaspoons kosher salt 2 teaspoons dried oregano[...]

2 tablespoons olive oil 2 1/2 pounds beef chuck or round, trimmed of surface fat and cut into 1 inch cubes Salt and freshly ground black pepper to taste 2[...]