Although the recipe is pretty long, and when you read it, you may have an impression that you have to wait a lot in the meantime, it is really not the case. You can move from one step of the recipe to the other one without any waiting, and all the components that are supposed to coll down will be ready on time.
*I use dark chocolate with approx. 65% cacao and it works perfectly for me. Depending on your preferred taste, you can use chocolate with higher or lower cacao content.