Jin Suo Shi or "Golden Key" has been cultivated in Wuyishan on a small scale for almost one hundred years. In the last few decades Jin Suo Shi has been the subject of substantial research for its natural cold and drought resistance. Master Zhang cultivates a small grove of Jin Suo Shi, planted from seedlings picked up during his years of research on Wuyishan's growing and finishing techniques. The terroir of Daping and Master Zhang’s expert finishing bring out fruity notes in this uncommon cultivar, along with a building intense sweetness.