Nepalese Potato, Tomato and Pea Curry

Name: Nepalese Potato, Tomato and Pea Curry
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: Asian
Ingredients: 1 tablespoon cooking oil; 1 large onion, finely sliced; 1/2 teaspoon ground black pepper; 1 -2 mild green chili; 2 teaspoons garlic, chopped; 1 teaspoon gingerroot, fresh grated; 1/2 teaspoon ground turmeric; 1 teaspoon salt; 2 cups potatoes, peeled and cubed; 1 cup peas; 1 large tomatoes, chopped; 2 teaspoons ground coriander; 1 teaspoon ground cumin; 1 cup hot water