1. In a large mixing bowl, whip the heavy cream until stiff peaks form.

2. Gradually add the sweetened condensed milk and continue whipping until the mixture is smooth and firm.

3. Stir in the chopped dark chocolate and peppermint extract until well combined.

4. Add a few drops of green food coloring if desired to achieve the shade of green you like.

5. Pour the mixture into a 1.5-litre (6 US cups) container and freeze for at least 5 hours or overnight.

6. Take the container out of the freezer 20 minutes before serving to allow for easier scooping.

7. When serving, be cautious of any sharp edges on the container.

8. Garnish with fresh mint leaves and shaved dark chocolate if desired.

9. To store leftovers, cover the surface of the dessert with plastic wrap to prevent freezer burn and keep in the freezer for up to 1 month.