Place durian pulp and sugar in a blender. Blend till smooth and creamy.
Mix gelatin with a small cup until the mixture dissolves completely. Let it sit for 10 minutes
Combine milk, egg yolks, durian puree in a bowl.
In a cooking pot, add some water and bring it to medium heat. Set the bowl over the pot of hot water bath and hand whisk constantly the mixture for 10mins.
Remove from heat and let it cool for a few minutes.
Add gelatine mixture to the durian mixture and stir to mix evenly.
Use a scissor to cut extra durian pulp we saved into some small pieces and garnish on top for each cup.
Chill in the fridge until set (estimate 40 minutes to an hour).