How Africa's first caviar won over Michelin-starred restaurants in Europe

In 2009, French entrepreneurs took a massive gamble: building a luxury industry in one of the world’s poorest countries. Before Acipenser, no companies had successfully farmed caviar in Africa. Today, its caviar is served in Michelin-starred restaurants in Europe. How did they get customers from around the world to take a chance on African caviar? And why is it so expensive to raise sturgeon for "black gold"?