I finely chop the chocolate first because it melts evenly and prevents clumping. It also makes stirring much easier.
In a small saucepan, gently heat the heavy cream over medium-low heat until just simmering. Avoid boiling or it may separate.
Remove from heat and pour cream over chocolate. Let it sit for a minute, then whisk until smooth and glossy.
Stir in vanilla extract and a pinch of salt to deepen the flavor. I love how just a little salt can make the chocolate taste richer.
Pour chocolate into a fondue pot or heatproof bowl to keep warm. Serve immediately with prepared dipping items.