In a large bowl whisk together rose water, cream and icing sugar till soft peaks form. Do not over whisk otherwise you will end up with butter. It should be silky and soft.
Assembly
Let the cake cool. Preferably overnite. Place the cake on the serving tray. Spread the icing generously over the cake. Sprinkle some icing sugar over it. Sprinkle all the chopped pistachios and rose petals on top.
Recipe by MADaboutkitchen at https://madaboutkitchen.in/rose-pistachio-cake/