Born in Kyoto in 1964, Koyama opened Patissier eS Koyama in Sanda, Hyogo Prefecture in 2003. He continues to work as a professional creator of new tastes, which revolve around the idea of “flavors for everyone, with a touch of class.”
Since he first participated in the contest held by France’s most authoritative club for chocolate devotees, C.C.C., in 2011, Koyama was awarded the first prize for five years in a row. He has also won numerous prizes for four consecutive years, since 2013, at the International Chocolate Awards. His ever-expanding activities as a global chocolatier were recognized in the 2016 International Chocolate Awards Americas and Asia Pacific Competition with eight gold, 21 silver, and three bronze awards. Each year Koyama visits cocoa-producing countries, thus far traveling to Ecuador (twice), Madagascar, Vietnam, Indonesia, Columbia (twice) and Peru. He continues aiming to be not only a chocolatier but also a “cacaotier,” meaning he gets as close as possible to the mentality of people in cacao-producing regions, spending his days learning about the history of these regions, the cultivation environment, and the potential of cacao itself, from cacao hunters and chocolate couverture artisans.