How do I make tiramisu

by Petros
(Greece)

So, I would like to ask you how to make tiramisu. I make a tiramisu with mascarpone cheese and cream (coffee, vanilla, no eggs, etc.). The problem is that the final mix is very stiff and not soft and airy like the traditional tiramisu, so can you show me the way to treat this mix in order to be airy and refreshing?

PS - just found about you today. I would like to say that I found your videos very helpful, so I would like to thank you.