Take 4 raw mango. Wash it properly...boil the mango in a cooker for 1 whistles...after 1 whistles switch off the flame..cool it and open the lid...keep the mangoes in normal water...then peel the mangoes and take out pulp...

Once it is done..then add jaggery as needed, 1 tsp black pepper powder

Rock salt as needed...then keep in a oven for 2 minutes...don't preheat the oven...after 2 minutes..check it...or till the jaggery dissolves and it should be in a dry consistency...once it is done...