Curried Ground Turkey With Potatoes

Name: Curried Ground Turkey With Potatoes
Ingredients: 3-4 Tbsp vegetable oil; 1 pound ground turkey (thigh meat if you can get it); 1 chopped onion; 2 chopped garlic cloves; 1-2 chopped fresh red chiles (optional); A 1-inch piece of peeled ginger, grated fine; 1/2 cup water; Salt to taste; 1 Tbsp garam masala (or curry powder); 1 teaspoon turmeric; 1 teaspoon cumin; 1 teaspoon ground coriander; 2 large Yukon Gold potatoes, peeled and cut into 1-inch chunks; 2-4 Roma or other plum tomatoes, diced; 1 cup fresh or frozen peas; 1/2 cup (loosely packed) chopped cilantro or parsley