What is the most logical next event?

How to use a double boiler
Gather your materials.
You will need both the bottom pot and the upper pot; you will not need the lid that came with your double boiler, unless the recipe or project specifically calls for one. If you do not have a double boiler, you can make your own using a large pot and a shallow, heat-resistant bowl that can fit over it.
The bowl in your homemade double boiler should fit snugly onto the large pot. There should be no gaps or spaces between the bowl and the rim of the pot.