01 - Place chopped dark chocolate in a heatproof bowl. Melt using a double boiler or microwave in 20-second intervals, stirring until smooth. Allow to cool to room temperature.
02 - In a mixing bowl, combine ricotta cheese, powdered sugar, vanilla extract, and salt. Beat with an electric mixer or whisk until smooth and creamy.
03 - In a separate bowl, whip cold heavy cream until soft peaks form.
04 - Gently fold the cooled melted chocolate into the ricotta mixture until fully incorporated and uniform.
05 - Carefully fold the whipped cream into the chocolate-ricotta mixture in two stages to maintain a light and airy consistency.
06 - Divide the mousse evenly among four serving glasses or bowls. Cover and refrigerate for a minimum of 2 hours, or until set.
07 - Prior to serving, adorn with shaved chocolate, cocoa powder, fresh berries, or mint leaves as desired.