In a ninety minute tour, you'll taste the pure flavor of cacao thanks to Claudio Corallo, an Italian-born agronomist who's made it his mission to produce the world's best chocolate -- and he thinks he's succeeded. Claudio lives and grows his cocoa on the tiny island of São Tomé e Príncipe -- west of equatorial Africa -- and he ships his singe-estate-grown organic chocolate directly and exclusively to Allegio Chocolaté, this store in Palo Alto.