i have only made mousse a few times, but it didnt start setting correctly until i was using a) whipping cream (ie whipped from scratch, not from a tub) and b) using a stand mixer. otherwise it tasted good but didnt have a consistent fluffiness. if your doing this by hand, or using a pre-whipped cream i doubt you will be successful based on my experience.

i have only made mousse a few times, but it didnt start setting correctly until i was using a) whipping cream (ie whipped from scratch, not from a tub) and b) using a stand mixer. otherwise it tasted good but didnt have a consistent fluffiness. if youre doing this by hand, or using a pre-whipped cream i doubt you will be successful based on my experience.