Ingredients:
- 1 ½ cups (355 ml) freshly brewed strong espresso or strong coffee, cooled
- 2 tablespoons (30 ml) coffee liqueur (such as Kahlua)
- 6 large egg yolks
- ¾ cup (150 g) granulated sugar
- 1 pound (450 g) mascarpone cheese, room temperature
- 1 cup (240 ml) heavy cream, cold
- Approximately 24 Savoiardi ladyfingers (Italian sponge biscuits)
- Unsweetened cocoa powder, for dusting
Instructions:
- Combine cooled coffee and coffee liqueur (if using) in a shallow dish. Set aside.
- In a double boiler or heatproof bowl set over simmering water, whisk together egg yolks and sugar constantly until the mixture is pale, thick, and has nearly doubled in volume (about 5-7 minutes). Remove from heat and let cool completely.
- In a separate bowl, whip the cold heavy cream using an electric mixer until stiff peaks form.
- Gently fold the cooled egg yolk mixture into the mascarpone cheese until combined. Then, gently fold in the whipped cream until everything is just combined. Avoid overmixing.
- Quickly dip each ladyfinger into the coffee mixture and arrange them in a single layer at the bottom of the baking dish.
- Spread half of the mascarpone cream evenly over the ladyfingers.
- Repeat layers with the remaining ladyfingers and mascarpone cream.
- Cover the dish tightly with plastic wrap and refrigerate for at least 4-6 hours, or preferably overnight.
- Before serving, dust the top generously with cocoa powder. Cut into squares and serve cold.