Solar kettle and quick solar cuppa
You will need SUNGLASSES ON FIRST
clear glass cups or double walled glass cups
borosilicate glass kettle or jar with glass lid
black glass marbles
2 mirrors or solar reflector
Wire trivet or wire cake stand
Step 1: Black Glass Heats Up
Why this kettle works
It will heat up with 20 minutes direct sunlight, and heat proportionally faster with mirrors and reflectors.
Black glass marbles heat up and hold heat evenly.
Round glass marbles have the least amount of surface contact with the outside container.
They trap heat from the sun and retain the heat inside the container.
Their large surface area heats the water in the kettle.
The marbles are inert and smooth and their surface sterilizies in the sun.
The marbles are too big to go down the spout of the teapot.
I use the kettle all day for pre-heating water for cooking and making cups of tea.
A quick look at the thermometer tells you if its the right temperature or if you need the next step too.
Step 2: Making a Solar Quick Cuppa
What you need
Glass tea cup
Glass lid for tea cup
Black glass marbles
2 mirrors set at 60 degrees
Aluminium foil tray
Use your preheated water from the solar kettle or cold water.
Place a clear glass lid on the marbles and water.
Leave in the sun with the tray set for 5 minutes time to the sun.
Step 3: Add Tea Bag and Steep
When the water is bubbling in the sun, or has reached your tea making temperature
Add a teabag
Put the glass lid back on.
Leave in the solar mirror focal area for another 5 minutes
Spoon out black marbles
Add milk, sugar, or other flavours
Chai tea has cinnamon and cloves which are antiseptic and mildly insect repellent.
Here is a pair of Bolle welding sunglasses, that look like ordinary sunglasses.
They are safe for welding, glass blowing and SOLAR COOKING.
This is the essential first ingredient in all solar cooking projects.
Some sunglasses will provide some protection from concentrated sunlight,
but to be sure, and to be safe, every time, every day, PLEASE consider getting a pair of these.