Where parchment doesn't work
I learn most things by experience, and this evening taught me that it isn't a very good idea to put parchment paper under a pizza that you are going to cook on a stone on the BBQ. Wow, it was really exciting! The parchment paper immediately caught fire and melted into the pizza. The pizza also was really black on the bottom--I mean really black (think it was a combination of the heat of the stone and the ability of what Bruce would term the lowest of low grades of parchment's ability to melt into anything subjected to 600 degrees).
What an exciting evening we had. And, we're a little hungry too! I did salvage a little bit of these pizzas and tried to separate the bottom from the top on part of the really burnt parts, but that was pretty challenging--pizza doesn't separate well. We'll, we didn't burn the wine, so I guess will manage through the evening, somehow.