In a mixing bowl, combine mascarpone cheese, heavy cream, granulated sugar, cocoa powder, and orange zest. Whip until smooth and fluffy (3-5 minutes).

Quickly dip each ladyfinger into a mixture of hot water and cocoa powder to moisten.

In a glass serving dish or individual cups, layer dipped ladyfingers followed by a generous spoonful of the creamy mixture. Repeat layers until full.

Cover with plastic wrap and chill in the refrigerator for at least two hours or overnight.

Before serving, top with dark chocolate shavings for added flair.