Break the gingerbread into pieces about 2 € and place in a mold so that the bottom is well covered. Mix the cold coffee with the rum and drizzle over the crushed gingerbread.
Beat the whipped cream until stiff, mix the mascarpone with the egg liqueur and fold in the whipped cream.
Sprinkle with the cocoa powder before serving.
Tip: Prepare the tiramisu 1 day in advance so that the gingerbread has absorbed the liquid.