Wash, dry, peel and then grate the mangoes. Add all the ingredients except raisins and coconut to the grated mangoes, cover and keep aside for 3 hrs.On medium high heat cook the mixture, stirring continuously. When the mango shreds become soft and translucent, add a hand full of raisins and thinly sliced dry coconut. Stir for a minute and swich off the gas.Let it cool, store it in a clean and dry glass jar.