Beer drinkers are living in a very good time. They have a plethora of choices in colors, flavors, makers, and more. The United States has more breweries now than at any time since Prohibition. But any business that grows this fast is bound to have some growing pains, and John Holl says it certainly does. Holl is the author of Drink Beer, Think Beer: Getting to the Bottom of Every Pint . And that subtitle is a double-entendre; Holl gets to the bottom of the story about beer in our time,