1: Whip cold cream in a chilled bowl with chilled beaters.
2: Gradually add condensed milk to the whipped cream, folding gently from the bottom to avoid deflating.
3: Line a tray with baking paper. Place half of the biscotti with the decorated side down.
4: Spread the whipped cream mixture evenly over the biscotti.
5: Place the remaining biscotti on top, centering them.
6: Freeze the tray for at least 1 hour.
7: Once frozen, cut through to form perfect gelato cookies.
