It's the only way to be objective.

A middle-class man making $40,000 might not be able to buy a new BMW. But he can buy the occasional bottle of vodka for $35 a bottle. People are drinking less than they once did, but they are drinking better.

The big difference between beer and spirits is that spirits like vodka and Scotch offer consumers a wide range of flavors and mixable options and you can buy them in a range of price points.