Tell us about yourself!
The headline is misleading. This is not ginger beer as there is no fermentation in the process of making this beverage. It does sound very tasty, though.
Clay could be used in place of putty. Some third-world countries may not have putty, but some areas of the world have easy access to clay.
Alright! We went from low-tech to high-tech - It's a nuclear fridge. :-)