This Recipe here uses Instant Puliyodarai mix. However, certain additional ingredients are added to make it really very tasty.
Cook the Rice according to the following Recipe on this site (but with 1/4 cup less water). Here is the Recipe to cook rice. Basically, the rice should NOT be mushy or overcooked, but not too dry either.
Place a medium to large non-stick frypan on medium heat.
Add 4 tbsp oil. When the oil is hot, add the mustard seeds and red chillies.
When the mustard seeds start crackling, reduce the heat to low and add the peanuts and 1/4 teaspoon salt. Use a non-stick spatula. Stir fry until the peanuts are fried a little, say golden brown. Do not burn the peanuts.
Add the cooked rice to the frypan that has the puliyodarai mix. Add 2 tbsp oil on top.
Add 1 teaspoon salt. Mix the contents gently, without mashing the rice. Mix thoroughly.