Next, add mustard seeds to the same oil. Let them splutter. Then add fenugreek powder, mustard powder, piriyan chilly powder, turmeric powder and salt. Saute in low heat and then turn off the gas.
Let the mixture cool. When cooled completely, add to the prawns. Mix the pickle uniformly.
:-Store in a glass bottle and cover it tightly. This pickle lasts for 3-4 days outside the refrigerator but stays longer upto 10 days, when kept in a refrigerator.