In 1832, Adam Henkell (1801-66) established himself as a wine merchant in Mainz, thus laying the cornerstone of today's company, Henkell and Sohnlein. With creation of the brand-name of Henkell Trocken in the late 19th century, his grandson Otto Henkell (1869-1929) made the breakthrough onto national and international markets. Henkell and Co is Germany's largest and most modern sparkling wine cellar, as well as one of the world's most renowned producers of sparkling wine. Of the Henkell Trocken brand alone, the largest exported sparkling brand, more than 20 million 0.75 l bottles are sold world-wide per year. According to a 1997 study by the research organisation Emnid, Henkell is Germany's best-known and most popular sparkling wine.