Calle 23 (pronounced Kai-Yay 23) tequila is the result of a journey started in 2003 by French-born biochemist Sophie Decobecq. Sophies patience and passion drove her to create a tequila that could first of all satisfy her own palate, then the palates of potential aficionados. Calle 23 is a highland tequila from Jalisco. Highland tequilas are known for their sweetness. Sophie distils each expression separately (Blanco, Reposado, Aejo) using combinations of different yeasts. This is very unusual. The Anejo is 100% agave and matured for 16 months in oak casks.