Chickpeas with a Spicy Tomato Sauce

This curry is as pervasive in northern Indian home kitchens as is macaroni-and-cheese in kitchens all across the United States. Its color reflects the dark spices that paint its flavors. It is best served with bread as an accompaniment, and it appeases even the vegan at the table. Those who don’t think it’s hot enough can cut up some fresh green Thai, cayenne, or serrano chiles and scatter them atop the onion.