The tiny nation of Iceland is unique in many ways. She generates more than 90% of her electricity from renewable sources. Also the island nation writes more books per capita than any other country in the world. But there is something else, Icelanders have found a unique way to bake bread and cake in the ground using geothermal heat - in other words, they use the ground as oven to bake.
https://www.treehugger.com/green-food/how-they-bake-volcano-bread-underground-iceland.html
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