Diesel Café

While the corporate megapercolators spend millions on ads that pit yuppies against average joes, the Diesel buzzes blissfully along, keeping the emphasis on the coffee. Tattered banquettes and walls covered with funky artwork provide a quirky welcome to Davis Square caffeine addicts. And one sip of the house blend—made from beans that are subtly roasted, not burnt to a crisp—confirms that the brew here is highly habit-forming.