01 - Combine the cooled strong coffee with coffee liqueur in a shallow bowl.
02 - Whip the heavy cream with powdered sugar until stiff peaks form using an electric mixer.
03 - Gently fold the mascarpone cheese into the whipped cream until fully incorporated and smooth.
04 - Briefly dip each ladyfinger into the coffee mixture, ensuring they are moistened but not soggy.
05 - Layer dipped ladyfingers and mascarpone cream alternately in individual serving glasses, starting with ladyfingers at the bottom.
06 - Cover and refrigerate the assembled cups for at least 4 hours to allow flavors to meld and dessert to set.
07 - Just before serving, dust the tops generously with cocoa powder.