Separate the durian flesh and discard the seeds. For best results, the durian flesh should be chill.
Weigh the flesh and place it into a medium sized bowl. Keep chilled.
In a separate grease-free bowl, pour the whipping cream (see Note 1). Add sugar to it.
Whip the cream until it reaches soft peak consistency. To check if the cream is ready, once you see it thickened, turn your machine off and lift the beaters up. If you see the cream at the bottom of the beaters in soft peaks, the cream is ready. Do not overbeat (see Note 2). Set the cream aside.
Next, beat the durian flesh for approximately 30 seconds to break it up into a creamy consistency.
Add the durian flesh into the cream.
Beat the durian mousse mixture briefly until both the cream and the durian flesh are thoroughly mixed.
Transfer the durian mousse into a piping bag (see Note 3). Snip the bottom to make a hole.
Pipe the durian mousse into prepared dessert bowls or cups.
Tap the bowls lightly to level the mousse.
Decorate the top with a rose petal and some gold flakes. Refrigerate until ready to serve. These durian mousse dessert is best served chilled.