Heat heavy cream in a small sauce pan over medium-low heat until you see bubbles rising. (Please see the video).
Pour it over chopped chocolate and wait for 1-2 minutes. This will help chocolate melt easier.
Whisk the mixture until it is smooth.
Cool until it reaches the consistency you desire and use it.
NOTES
You can use 5 oz both for chocolate and cream instead of measuring the ingredients to 5.4 and 5.6 as given in the recipe. It's not a big difference. I give them that way just to give the exact conversion of gram measurement.