|This combination chophouse and bar sits along some prime Embarcadero waterfront property that mysteriously circumvented zoning laws when it was built, opening in 2008. Downstairs there are dining tables with white tablecloths, large glass windows overlooking the Bay Bridge, and the odd theme of water wheels. Upstairs is the Quiver Bar, named by developer/restaurant designer Pat Kuleto after the neighboring Cupid's Span sculpture. This bar, with its walls of lit bottles and views of the bridge, was once home to the two-group Bosco machine that now lives as the single origin machine at Blue Bottle Cafe. (Management found it too expensive and large for restaurant bar purposes.) In place of the Bosco is now a sad, single-group La Spaziale machine - although they still import beans from Caff� Vita in Seattle. It's a shame that such promising, deliberately thoughtful espresso pedigree was so quickly squandered. Because from the La Spaziale, they pull shots with a split medium and light brown crema that covers the Fortessa Vitraluxe cup - filled rather high - but dissipates quickly. It's a relatively thin shot with a mellow, subdued pungent flavor - brewed with a relatively high serving temperature. As a result, the Caff� Vita beans are essentially wasted on a ridiculously expensive $4 espresso that might have better justified its price if they retained the legendary Bosco machine.