yes, you don't want to boil it at all, just get it hot enough to maintain a simmer until it gets hot enough to melt your hot chocolate. You'll know when it's ready when the milk sort of turns brown from the resin. that should be your signal that the resin has melted out of your stems. Carefully lift your stems out of the milk and check them out. If they are clear, you're ready to add your chocolate. If not, simmer a little longer.