Thanks to Greg Cohen, who dropped science (and knowledge, et cetera) about tequila and Patrón. 

Greg Cohen is the Director of Corporate Communications at The Patrón Spirits Company, the brand owners and marketers of Patrón Tequila, Ultimat vodka, and Pyrat rum. Greg began his career in the beverage alcohol industry in 1995, handling public relations and communications efforts for Absolut vodka. Since that time, he's worked not just with spirits, but also with leading beer and wine brands, from Heineken to E&J Gallo.