Info: Cook them slow.

Ingredients:

1 onion, finely chopped
1/2 cup olive oil
1/4 cup fresh lemon juice
1/4 cup brown mustard
2 dry red chile peppers, crumbled
3 cloves garlic crushed
3 pounds beef short ribs
1 teaspon salt
1/2 teaspoon ground black pepper
1/4 teaspoon cayenne pepper

Combine onion,olive oil lemon juice, mustard, crumbled red chile peppers and garlic in a small bowl. Mix well and pour over short ribs; marinate, covered, overnight in the refrigerator.
Preheat oven to 400°F.
Drain ribs, reserving marinade, and place on a rack in a roasting pan fat side up. Season with salt, pepper and cayenne pepper.
Roast for 30 minutes. Reduce heat to 350°F and roast 1 hour more, or until meat is tender, basting occasionally reserved marinade. Serve warm.