Tagged: genetics

DNA Testing Keeps Finding Tieguanyin's Own Cousin in the Bag

Genetic and spectral tests on commercial Tieguanyin keep turning up a different, related Anxi cultivar blended in, most often Benshan, close enough in leaf and aroma to pass for its more famous cousin.

Same Leaf, Split Into Green and Black, Kept Almost the Same Caffeine

Catechins collapsed by more than ninety percent between the two halves. Caffeine barely moved. Oxidation, the reaction that defines oolong, is not what decides how much of it ends up in the leaf.