For preparing thaiyru rasam, first dry roast the fenugreek seeds and powder it.

Mix turmeric, salt and curd. Set aside.

Heat little oil in a pan, splutter mustard seeds, dry red chillies and curry leaves.

Simmer the flame. Add fenugreek powder and curd.

Boil and remove from fire.

Thaiyru(curd) rasam is ready.