Shizuoka, a prefecture on Japan's Pacific coast, wedged between mountains and sea. It has been the center of Japanese tea production for centuries, and understanding why says a lot about what ends up in your cup.

How tea got there in the first place

Tea arrived in Shizuoka in the early 13th century, brought back by Japanese Buddhist monks returning from study in China. The region's climate and terrain turned out to suit tea cultivation unusually well, and by the 17th century, Shizuoka tea had built a reputation across Japan for quality that outpaced most other growing regions.

Why the climate actually matters

Shizuoka's geography does a lot of the work. Coastal humidity, heavy rainfall, and mist rolling off the mountains create conditions that push tea leaves toward richer flavor and aroma than drier, less humid growing regions tend to produce. That terroir shows up differently depending on what's being made from the leaf: it's part of what gives Terracotta its depth once roasted, and part of why Emerald Cove develops the umami richness it's known for once shaded and processed.

A region built on more than one tea

Most people associate Shizuoka with green tea specifically, and that's fair, it's the region's dominant crop by far. But that same region also supports small-scale production of black tea and fermented tea, styles that never scaled the way green tea did but that a handful of producers have kept alive in small volumes. Red Onyx and Afterglow both come out of that quieter side of Shizuoka's tea tradition, made by producers willing to keep experimenting outside the region's main specialty.

Where the region is headed

Modern growers in Shizuoka have leaned increasingly into sustainable farming, organic practices, and updated processing methods, without walking away from the traditional techniques that built the region's reputation in the first place. That balance, respecting what's worked for centuries while still improving on it, is part of why Shizuoka tea keeps earning its reputation rather than just resting on it.

Every tin of Emerald Cove, Terracotta, Red Onyx, and Afterglow starts here. The region is doing as much work in your cup as the specific processing each tea goes through afterward.