It's hard to tell in this still photo, but this panful is still liquid after chilling overnight. I hated to waste it, so I poured it into the Vitamix with lots of ice. I had to do it in batches, because it got very big and fluffy!
The carton of gelatin should be arriving tomorrow, and then I'll try to do it right.
Experimenting with a failed recipe attempt is a good way to learn about how these unusual ingredients behave. Now I know. Waste not, want not!