Mocha Whipped Ganache

In a food processor, process the chocolate with the espresso powder, if using, until very fine.

In a 1-cup or larger microwavable cup with a spout (or in a small saucepan over medium heat, stirring often), scald the cream (heat to the boiling point; small bubbles will form around the periphery).

With the motor of the food processor running, pour the cream through the feed tube i