Chop the chocolate into small pieces, none larger than 1/2" or chop roughly and finish chopping in a food processor.
Pour the cream into a microwave safe bowl and heat until just below the boiling point. You want to get the cream as hot as you can without it boiling over. The time will depend on your microwave.
Pour the cream over the chocolate, add the optional brandy.
Do not stir for 1-2 minutes to allow the chocolate to begin melting.
Stir with a wooden spoon, trying not to incorporate any air, until all the chocolate bits are melted or, if using the food processor, run the processor for 20-30 seconds until the chocolate is melted.
Notes
Store at room temperature 1-2 days, in the refrigerator for a week or freeze for 2-3 months.