In a blender, add the chopped mangoes. At this step, you can also add sugar

Beat till cream is soft and fluffy. Ensure you don't over whip or over beat the cream.

Add the mango puree to the beaten cream.& Dissolve gelatin powder
and keep them refrigerat for 30 mins

Now take a slice of mango,put mango moosse on the edge of mango slice & roll it,fill out the all the slices same process & keep it refrigerat for 1 hour