Autumnal beers fill an interesting niche, bridging crisp, easy-drinking summer brews with richer, heavier holiday beers. What makes a fall beer you ask? "There's no consensus," writes Chow, who tasted more than a dozen to pick their top brews. "Pumpkin beers, obviously, are a popular offering. But breweries are also making everything from light sour beers to deep stouts."