Serve this mango chutney with Chicken and Pork Seekh Kebabs or with grilled fish. Apricots or peaches also work well in this recipe.
Heat oil in a saucepan over medium heat. Add onion, and cook until soft and translucent, about 4 minutes.
Add remaining ingredients, and cook until thickened, 20 to 25 minutes. Let cool. Serve at room temperature. Chutney can be refrigerated in an airtight container for up to 1 week; bring to room temperature before serving.