Add onion seeds/cumin seeds to a heated saucepan. When the cumin crackles and releases a roasted aroma, add the asafoetida. Add green chillies, curry leaves, then tomatoes, salt, turmeric powder and cook. If you would like it a bit thicker, add the wheat flour.
Serve with parathas.
Variation
You may add a tempering as garnish of mustard seeds (rai) (¼ tsp), dried red chilli (1-2) and curry leaves (1 sprig).
Serves 4