Chocolat Kohler
![Kohler chocolate factory at Sauvabelin with the mill on the Flon river (1860)](https://upload.wikimedia.org/wikipedia/commons/c/cc/Sauvabelin.jpg)
Kohler notably introduced hazelnut chocolate, which was perhaps the first combination chocolate bar. Provided by Wikipedia
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52by Köhler, Peter, Muscheler, R., Fischer, HubertusGet access
Published in Geochemistry, Geophysics, Geosystems (2006)
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Article in Journal/Newspaper -
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