Running new lids through very hot water before the first use
seems to help. The lids can be used over and over if they are
not bent too badly when opened (pry off lid carefully).
5. The jar can be suspended near the bottom of the funnel using
fishing line or string (etc.), instead of placing the jar on a
block of wood. A plastic bag is placed around the jar with air
puffed inside, as usual, to trap the heat. The suspension method
allows sunlight to strike all surfaces of the jar, all around,
so that it heats faster and more evenly. This suspension method
is crucial for use in winter months.
6. Adjust the funnel to put as much sunlight onto the cooking
jar as possible. Look at the jar to check where the sunlight
is hitting, and to be sure the bottom is not in the shadows.
For long cooking times (over about an hour), readjust the position
of the funnel to follow the sun's path. During winter months,
when the sun is low on the horizon (e.
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