To easily remove kulfi from the mold, dip it in warm water and rub the mold between the palm of your hands.
After removing the kulfi from the mold coat the kulfi with crushed pistachios if needed.
You can also sprinkle crushed pistachios on top of the mold once the mixture is half set.
You can also use store brought slivered almonds if you don't want to go to the process of blanching the nuts.
Check out how to blanch almonds at home - super easy. You can blanch the pistachios the same way too.
To blanch almonds or pistachios at home:
Bring a pot of water to boil.
Add unsalted whole almonds with skin. Let it simmer for a minute but not longer than that.
Drain the almonds in a colander and rinse with cold water. You will see that the skin has slightly loosened.
Pat dry with paper towel.
Hold one side of the almond and give it a gentle squeeze. You now have blanched almonds.