In the far south of Japan, the tea fields’ proximity to active volcanoes means the leaves have to be treated in a special way. Several times a year, the volcanoes spew out ash that is deposited on the surrounding land. So once the leaves have been harvested, they are rinsed before the first stage in processing: steaming. The rinsing in cold water lasts for 30 minutes and no longer, to minimise the loss of aromatic compounds.
A volcanic plantation
27 January 2017
