Seaweed oven
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Recommended by 44 out of 45 hikers
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These are algae ovens, used to produce soda for glass production and later iodine for medicinal purposes from the abundant seaweed deposits on the Breton coast. A laborious task, because five to six tons of fresh algae produce just under a ton of dried algae. Using brushwood and gorse fires, 200 kilograms of soda are obtained in the ovens, which in turn produces 10 kilograms of iodine.
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•August 1, 2021
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