 Under the leadership of the founder's son, Emile-Justin Menier, the company concentrated solely on the manufacturing of chocolate products.In 1864 he sold off the pharmaceutical manufacturing part of the business and began a period of expansion that made the Menier Chocolate company the largest chocolate manufacturer in France.Under Emile-Justin Menier, the company purchased cocoa-growing estates in Nicaragua along with sugar beet fields and a sugar refinery at Roye in the Somme in France.