Place sweetened condensed milk in the fridge over night or at least 6 hrs prior to using for the recipe.
In a stand mixer with the whisk attachment (or using a hand mixer), beat cold heavy whipping cream on medium until stiff peaks form.
Lower the speed, and add the in the cold sweetened condensed milk, saffron, cardamon, to the whipped cream. Now turn the speed back up and mix everything until stiff peaks form.
Add the chopped ras malai into the mixture along with the ras malai milk and fold everything in.
Transfer into a bread loaf pan garnish with crushed pistachio and cover with plastic wrap. Place in the freezer for at least 6 hours or overnight before eating. Enjoy!
Notes
I used Nanak Rasmalai, it can be found at any indian grocery store costco.
Use low fat free if you want cut the sugar down.
Freezing over night is key, but 6 hrs is fine as well.