In a small saucepan, heat the heavy whipping cream over medium heat until it just begins to simmer. Don't let it come to a rolling boil – you're looking for those little bubbles that tell you it's hot enough.
Pour the hot cream over the caramelized chocolate, making sure every bit is covered. Let it sit for about 3 minutes if you just made the caramelized chocolate or 5 minutes if using premade chocolate. This gives the chocolate time to soften and melt into the cream.
After the wait, whisk the mixture until the chocolate is fully melted and the ganache is smooth. If you find any lumps, you can gently heat the mixture over a double boiler while stirring until it's completely smooth.
Cover the ganache with plastic wrap, pressing it directly onto the surface of the chocolate to prevent a skin from forming on the top. Then chill the emulsion in the refrigerator until it's completely cooled – about 2 hours.
Once chilled, take it out and whip it using an electric mixer on high speed until it's light and fluffy, which should take about 3-4 minutes.
Use immediately to frost cakes, cupcakes, or any dessert that could use a touch of creamy, white chocolate goodness, or keep it in the fridge for up to one week