   The duo invites the public to watch them painstakingly make
every bar, each branded by the origin of the beans—using a
process that takes 37 days and isn't practiced by any other city
chocolatier.  Such precision has earned Rick, 34, and Michael,
31, a growing list of fans. Mast Brothers Chocolate sells to 120
stores and restaurants, mostly in the New York area, and has a
waiting list of more than 1,500 worldwide. Even President Barack
Obama feasts on its creations. The business, launched with
$35,000 in savings, just became profitable, and the Masts are
expanding their factory in order to triple production.  The
brothers and their 14 employees taste their products all day,
but say they never feel sick.  “Our chocolate isn't really a
candy,” Rick said. “It's more like caviar.”  Full Article