In a heatproof bowl, combine the chopped dark chocolate and heavy cream. Place the bowl over a pot of simmering water, ensuring the bowl does not touch the water. Stir until the chocolate is completely melted and smooth.
Remove from heat and stir in the vanilla extract and sea salt, mixing until well combined.
Allow the chocolate mixture to cool to room temperature. Once it cools, cover the bowl with plastic wrap and refrigerate for about 2 hours or until the mixture is firm enough to scoop.
Using a small scoop or your hands, take about a tablespoon of the chilled chocolate mixture and roll it into a ball. Aim for a rustic look to mimic a pine cone.
Roll each chocolate ball in the finely crushed nuts to create a pine cone texture. Make sure they are well-coated.
For an added layer of flavor and presentation, dust each truffle lightly with unsweetened cocoa powder.
For a festive touch, gently brush edible gold or silver dust over the truffles to give them a shimmering finish.
Place the finished truffles on a parchment-lined tray and refrigerate for another 30 minutes to firm them up.
Notes
Arrange the truffles in a pine cone shape on a decorative plate for a festive look.