Heat 2 tsp of oil, add bengal gram, urad dal, fenugreek seeds, when dal starts to change color, add coriander seeds, red chillies and hing. Saute for a few minutes and then add grated coconut, pearl onions and curry leaves. Saute until coconut turns light golden brown on low flame. After it cools, grind it to a smooth paste and keep it aside. Our sambar masala paste is ready.