Recipe(tried): Pollo en Pina (Chicken with Pineapple)

I don't remember where I originally found this delicious recipe, but it comes from Guatemala.

Pollo en Pi a
Serves 4

1 chicken, cut into pieces
1 tablespoon oil
1 onion, chopped
2 cloves garlic, chopped
1 fresh pineapple, cut in 1-inch chunks, or 1 (20-ounce) can juice-pack pineapple chunks
1/2 cup dry sherry
2 tablespoons vinegar
1/2 teaspoon cinnamon
1/4 teaspoon cloves
pepper
2 tomatoes, chopped

In a Dutch oven, brown chicken in oil. Remove. Add onions and garlic to the pan and saut until soft. Return chicken to the pan. Mix in remaining ingredients except tomatoes. Bring to a boil, then simmer, covered, 20 minutes. Add tomatoes. Simmer, uncovered, until chicken is cooked through, about 20 minutes longer.
Serve with rice.