Howto: start a fire with a lemon

Cory Doctorow 7:47 am Fri Mar 18, 2016

You'll a few more things — some copper cotterpins, some zinc nails, insulated wire, and steel wool. You make a battery out of the lemon, short it against the steel wool, which makes it red hot, and that lights the tinder you've set on top of it.

(via Kottke)

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