1 tablespoon oil
½ teaspoon cumin seeds
½ teaspoon nigella seeds (kalonji)
½ medium yellow or red onion, peeled
and minced (¾ cup [113 g])
1 (1-inch [2.5-cm]) piece ginger root,
peeled and grated or minced
2 cloves garlic, peeled and grated or
minced
2 large tomatoes, peeled and diced (3
cups [480 g])
2–4 green Thai, serrano, or cayenne
chiles, stems removed, chopped
2 tablespoons grated jaggery (gur)
1 teaspoon coarse sea salt
1 teaspoon garam masala