Splutter mustard seeds followed by fenugreek seeds, ginger, fry it for 30 seconds, to this then add garlic, fry it for 30 seconds, followed by onion and fry it until onion turns golden brown. Once this is over, add the chillies and curry leaves into the vessel and fry.
Add turmeric powder and stir.
Add curd and water and stir continuously until mixture is hot but be careful to switch off the fire before the moru curry reaches boiling point.