Fasting days had been a tradition in Switzerland since the late medieval period. Despite not being seen as part of the reformed Protestant faith, they continued to be observed in parts of Switzerland. 

In October 1567, there was a Geneva-wide fast to show support to the Protestants who were being persecuted in Lyon, France. This fast is recognised as the first Jeûne genevois. 

In 1869 as a result of the Federal Fast across Switzerland, Jeûne genevois was no longer an official holiday, though it continued to be observed by many Genevans. In 1966, it was reinstated as a holiday. 

While the religious fasting element is no longer widely observed, banks, most businesses and shops will be closed on Jeûne genevois. 

In the sixteenth century, the only food that was allowed to be eaten on Jeûne genevois was plum pie. It remains a treat to be enjoyed on this holiday to this day. #Geneva #OccasionalDigest