How to Make It
In a large skillet, heat the oil until shimmering. Add the mustard seeds and cook over moderately high heat until they begin to pop, about 1 minute. Add the dried chiles, coconut, jalapeño, cumin seeds, curry leaves and turmeric and cook over low heat, stirring, until the coconut just begins to brown, about 2 minutes. Increase the heat to moderately high, add the zucchini and squash and cook, stirring and tossing, until tender, 7 to 8 minutes. Season with salt and cook for 1 minute longer. Transfer vegetables to a large bowl and serve.