Steps:
Prepare the Berry Mixture:
In a bowl, toss mixed berries with sugar and lemon juice. Let sit for 10-15 minutes to release their juices.
Make the Cream Layer:
In a large bowl, beat mascarpone cheese, heavy cream, powdered sugar, and vanilla extract until soft peaks form.
Assemble the Trifle:
Dip ladyfingers briefly into orange or berry juice.
Layer the soaked ladyfingers in the bottom of a trifle dish or individual serving glasses.
Add a layer of mascarpone cream. followed by a layer of the berry mixture.
Repeat the layers until the dish is full, finishing with a layer of cream on top.
Chill:
Refrigerate for at least 2 hours to allow the flavors to meld.
Garnish and Serve:
Top with berries, mint leaves, and a light dusting of powdered sugar for a beautiful presentation.