Blanch the spinach in hot water and then put immediately in ice-cold water. You can also use unblanched spinach if you like. Keep the spinach aside.

Take a pan. Add oil to it. Once the oil is hot add whole cumin. As the cumin starts spluttering, add the chopped onions, ginger, tomato and green chilies.

Also add the cumin powder, turmeric powder and coriander powder and salt and add a splash of water.

Saute all the ingredients in the pan for about 5 minutes. Turn off the flame and let it cool.

Transfer the blanched spinach and the ingredients of the pan to a mixer.

Blend the mixture to a smooth paste.

Add oil to the same pan and heat it. To the hot oil add the spinach mixture.

You can add little water to transfer all the spinach from blender jar to the pan.