Jodi Geren, Four Barrel operations manager, says the drawings were all done by Kevin Walker, who's illustrated all the coffee shop's mugs to date. "He's a regular customer and a really talented artist," Geren says, "so if we have a wild hair we run it by him."
SFoodie asked if the baristas pictured are treating the sale of their mugs as a popularity contest. No, Geren laughed ― however, she did mention that the Viking mug is selling best. Sounds like Cinnamon Girl and Bobby Valentino need to step up the charm.
Four Barrel Coffee: 375 Valencia (at 15th St.), 252-0800.