01 - Place the chopped chocolate in a heatproof bowl.
02 - In a small saucepan, heat the cream over medium heat until it reaches a gentle simmer, avoiding boiling.
03 - Pour the hot cream over the chopped chocolate. Let it sit for 2 minutes to melt, then stir gently until smooth and glossy.
04 - Incorporate the cubed butter and vanilla extract into the mixture, stirring thoroughly until fully combined.
05 - Cover the bowl and refrigerate for at least 2 hours, or until the ganache is firm enough to scoop.
06 - Using a small spoon or melon baller, scoop heaping teaspoons of ganache and roll into balls by hand, wearing gloves if preferred.
07 - Roll each ganache ball in cocoa powder or the chosen coating until evenly covered.
08 - Place coated truffles on a parchment-lined tray and refrigerate for 30 minutes until set. Serve chilled or at room temperature.