Mix the mascarpone with the bourbon vanilla and the rum flavor. Season to taste with a little sugar.
Rub the lime zest and stir into the mascarpone cream. Whip the cream until stiff and fold in 1/3 of it. Chop the meringues (in a freezer bag). Let the raspberries thaw briefly (1 minute in the microwave does not hurt either). Add a little sugar and a few dashes of lime juice.
Scatter some of the meringue crumbs on the bottom of the dessert glasses and alternately layer cream, mascarpone and raspberries on top. Finally, sprinkle a few crumbs of meringue on top and grate some lime zest over it.