Cut 1 mango in to small pcs and keep aside. Make mango puree of 2 mangoes by blending in the mixer jar.
In a Kadai, thicken the milk with cream and sugar. Boil it till the milk reduces to half. Allow the milk to cool.
Mix the mango puree into milk and blend the same to get a smooth mango puree. Keep this mixture in freezer. Allow the mixture to set slightly and blend again. Follow this process for atleast 2-3 times. This will help avoid crystals and will get a creamy kulfi.
Add the mango pcs into the mixture and mix well. Pour the mixture into kulfi mould and keep in freezer till the kulfi set properly. A stick for kulfi can be added at this stage (optional).