Aaron's first encounter with wine occurred at the tender age of 9 while on a family vacation to Paris. Requesting milk from a Parisian waiter, the server sneered, "Meelk ees for babies" and promptly returned with a glass of wine instead.

As a teenager, Aaron began conducting fermentation experiments in his parents' garage. This led to him to earn a Bachelor of Science degree in viticulture at the University of California, Davis, and then a degree in Viticulture from the Université de Bourgogne in Dijon, France. In 1990, he became assistant winemaker for John Kongsgaard at Newton in Napa Valley. Influenced by internationally-acclaimed wine consultant Michel Rolland, Aaron moved to Bordeaux in 1993, where he was winemaker at both Château Troplong Mondot and Château La Tour Figeac in St. Emilion until 1998. Upon returning back to the States, Aaron worked at Quintessa and St. Clement before striking out on his own.

While Aaron currently consults for several high-end wineries around the world, he is the exclusive day-to-day winemaker at Seven Stones. Aaron, along with his wife, Claire, also makes wines under his own Pott label. In 2012, Food and Wine Magazine named Aaron one of their “Winemakers of the Year."