Passionfruit, Mascarpone and Meringue Trifle

I have a weakness for anything with passionfruit, but this at least uses my weakness to good effect. You may as well let an obsession work for you. I don’t for one instant expect you all to rush out to Gerry’s in Soho to get a bottle of Passoa, though it is the most divinely camp liqueur you could ever come across. Cointreau is what I suggest if you have neither my sense of kitsch nor worrying extravagance. (Although, since my Passoa was a present, I actually have no idea how much it costs.