

A Swiss chocolatier whose simple innovation—adding hazelnuts to chocolate—created a timeless flavor that shaped an entire industry.
In the early 19th century, as Swiss chocolate was transitioning from an apothecary's drink to a confectioner's craft, Charles-Amédée Kohler saw potential in a local nut. Operating his factory in Lausanne from 1830, he experimented by grinding roasted hazelnuts into smooth chocolate, a combination that was both practical—stretching expensive cocoa—and deliciously novel. This wasn't mere recipe tweaking; it was a foundational moment for Swiss chocolate identity, introducing a creamy, nutty dimension that would become a global standard. Kohler’s company, built on this invention, thrived for generations, eventually merging with the giants Peter and Cailler. His legacy is tasted in every bar of milk hazelnut chocolate, a testament to one man's flavor intuition that outlasted empires.
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His original factory was located in the Saint-Laurent district of Lausanne, Switzerland.
The Kohler brand was ultimately absorbed into Nestlé, the world's largest food company, in 1929.
The invention is often cited as a direct precursor to the later creation of Gianduja, a chocolate-hazelnut paste.
“The hazelnut's oil marries with the cocoa to create a smoother, more durable paste.”