01 - Place the chopped dark chocolate in a heatproof bowl.
02 - Warm the heavy cream in a small saucepan over medium heat until it just begins to simmer, avoiding boiling.
03 - Pour the hot cream over the chopped chocolate and allow it to sit for 2 minutes to melt fully.
04 - Add the butter and vanilla extract, stirring gently until the mixture is smooth and glossy.
05 - Cover the bowl with plastic wrap and refrigerate for 1 to 2 hours until firm yet scoopable.
06 - Scoop approximately 1 tablespoon portions of ganache using a melon baller or teaspoon and quickly roll between palms to form balls.
07 - Roll each truffle in unsweetened cocoa powder or your preferred coating.
08 - Place coated truffles on a parchment-lined tray and chill in the refrigerator for 30 minutes before serving.