How Thomas Glover Fueled the Coast-to-Coast Tea Boom

Following Great Britain's initial massive order, the next global superpower to fall in love with Japanese tea was the United States—and the mastermind behind this next chapter was none other than the legendary Scottish merchant, Thomas Glover. Today, his historic residence, the "Glover Garden," stands as one of Nagasaki’s most famous premier tourist destinations. But in the mid-1800s, it was a bustling hub of international commerce where Glover recognized the immense global value of unique Japanese treasures, specifically premium tea and traditional washi paper, and began exporting them heavily to the American market.

As Japan rapidly opened its borders to the West, newly operational treaty ports began to emerge one after another—moving beyond Nagasaki to include Hakodate and Kobe.

With every new harbor that opened, the volume of Japanese tea crossing the Pacific skyrocketed in perfect proportion. This surging American demand transformed tea from a niche, exotic curiosity into one of Japan's absolute primary export pillars, forever intertwining the history of Japan's open ports with the global journey of its finest green leaves.