1 (4 pound) chicken, cut into pieces
3 tablespoons vegetable oil
4 tablespoons plain yogurt
1/2 teaspoon ground cumin
1 red bell pepper, chopped
1 teaspoon minced fresh ginger root
2 teaspoons garlic paste
salt to taste
1 green bell pepper, chopped
4 potatoes
1 tablespoon fresh chopped cilantro, for garnish