Boil pineapple with little salt till its cooked but little firm.
Grind coconut, mustard seeds,little turmeric powder and chili powder into fine paste.
Add this to pineapple and grapes and give it a nice stir. Cook for some time.
Now add in curd and and switch off the gas right before it starts to boil.
Heat coconut oil add curry leaves and mustard seeds and add this over the pulliserry and let it to cool. It tastes better the next day. I usually keep it in fridge and serve it next day