01 - Boil 2 cups water and steep Earl Grey tea bags for 5 minutes. Remove tea bags and stir in honey. Let cool completely to room temperature.
02 - Whisk egg yolks and sugar in a heatproof bowl over simmering water (double boiler) for 3-4 minutes until pale and slightly thickened. Remove from heat.
03 - Add cold mascarpone to the warm yolk mixture and whisk until completely smooth and no lumps remain.
04 - In a separate chilled bowl, whip heavy cream until stiff peaks form. Gently fold whipped cream into mascarpone mixture until fully incorporated and fluffy.
05 - Quickly dip each ladyfinger into cooled Earl Grey tea (don't soak) and arrange in a single layer in the bottom of an 8x8 inch dish.
06 - Spread half of mascarpone cream evenly over the ladyfingers using an offset spatula.
07 - Add another layer of tea-dipped ladyfingers, then top with remaining mascarpone cream, smoothing the surface.
08 - Cover dish with plastic wrap and refrigerate for at least 4 hours, preferably overnight, to allow flavors to meld and set properly.
09 - Before serving, dust generously with cocoa powder using a fine sieve. Garnish with lemon zest if desired.