Melt the chocolate for filling in a microwave-safe bowl for 30-second intervals, stirring at each interval.
Add the salt and whipping cream and mix well.
If desired, add some oil-based food colour, rice krispies, nuts or anything you'd like to add.
Place the ganache in the fridge until chilled and slightly thickened.
Pour the melted chocolate for the shells into a chocolate mold.
Turn the mold out onto parchment paper and allow any excess chocolate to drip out.
Add this to the remaining chocolate to use later.
Run a knife or spatula over the chocolate mold to smooth the edges of the chocolate shells, then place in the freezer until the chocolate has fully hardened, 10-20 minutes.
Pour or spoon the ganache into the chocolate shells and seal with more melted chocolate.
Return to the freezer until fully hardened, 20 minutes.
Unmold the chocolates and, if desired, drizzle with some more chocolate.
These chocolates should be stored in the fridge until ready to consume.