The bamboo unit is a rice paper drier and the pizzas are in fact edible rice papers, the kind of thing used to wrap spring rolls or salad rolls, or rice crackers. They make a rice slurry, like a really thin batter. Meanwhile they have a pot of water heated by a rice husk fire simmering away. It is covered tightly with a sheet of cloth. Some of the slurry is poured on and moved around the way you might move around sauce on a pizza when you’re making one, so it covers a circular area the size of the pot. A lid is placed on the whole deal and it steams for a short period, maybe 30 seconds. They peel the steamed paper off the cloth by working a long blade under the paper. The papers are place on these driers and when the unit is full, they put it out in the sun to fully dry.
27th Street 
What is the thing that looks like a bunch of pizzas wrapped up in bamboo snow fence?
The bamboo unit is a rice paper drier and the pizzas are in fact edible rice papers, the kind of thing used to wrap spring rolls or salad rolls, or rice crackers. They make a rice slurry, like a really thin batter. Meanwhile they have a pot of water heated by a rice husk fire simmering away. It is covered tightly with a sheet of cloth. Some of the slurry is poured on and moved around the way you might move around sauce on a pizza when you’re making one, so it covers a circular area the size of the pot. A lid is placed on the whole deal and it steams for a short period, maybe 30 seconds. They peel the steamed paper off the cloth by working a long blade under the paper. The papers are place on these driers and when the unit is full, they put it out in the sun to fully dry.