Cailler soon opened his first chocolate factory in neighbouring Corsier-sur-Vevey in 1819. It is considered one of the first modern chocolate factories. The factory allowed Cailler to produce solid and affordable chocolate, that was moulded into tablets or small blocks.
In 1819, Cailler inaugurated his first chocolate manufacturing facility in Corsier-sur-Vevey, a location adjacent to his original site. This establishment is considered one of the earliest modern chocolate factories. It allowed Cailler to produce solid and affordable chocolate that was molded into tablets or small blocks.