The tea in question? Probably Keemun — which is still used to make Earl Grey to this day — or Lapsang Bohea, a high-end black tea with a robust flavor. Another theory points to a practical ...

While black teas weren't the only type destroyed, those that were included the varieties Bohea, Congou and Souchong. Black tea has become a beloved beverage in around 40 to 50 countries worldwide ...