This is an expanded section of a larger article detailing tea growing in Colombia and my travels there. You can read the full article here. In addition to owning their tea garden, Bitaco has built a brand new, state-of-the-art tea processing plant outfitted with equipment purchased from India and organized specifically for the purposes of making top quality tea. It's perhaps the most modern tea processing facility in the Americas. Below is an in-depth, detailed account of how they process their black and greens tea. They still processed some tea in their older Hindú facility, just down the road, but much of [...]
Tea processing is the most important quantifier when determining or producing a tea type. Green tea, yellow tea, white tea, wulong tea, black tea and post-fermented teas all begin as fresh Camellia sinensis leaves and go through different processing steps. While there are an infinite number of variations that result in an infinite number of tea styles, the same underlying processing methodologies largely define the tea's type. There are many tea processing charts that attempt to accurately depict the tea process, but many of them add unnecessary levels of complexity, or skip steps. The goal here was to depict very general [...]
Gracias a Fernando Enrique Padín Sáez de España por proporcionarme esta traducción al español del gráfico de los procesos del té. Original here. Descargar gráfico de los procesos del té: [PDF] [JPEG] Gráfico de los procesos del té by Tony Gebely is licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License. Based on a work at worldoftea.org.
Have you ever wondered why Japanese green teas are so green? And why Chinese green teas are not as bright green, but are typically yellower? The reason lies in the processing steps for each tea and in particular the "kill-green" step of the processing some tea types. The term kill-green is derived from the Mandarin shaqing (杀青), which means "killing the green." Kill-green is also referred to as “de-enzyming” or “fixing” and is a process of tea manufacture used to halt the oxidative browning of tea leaves by denaturing the enzymes responsible for oxidation-- polyphenol oxidase and peroxidase. Think of an [...]
Oxidation refers to a series of chemical reactions that result in the browning of tea leaves and the production of flavor and aroma compounds in finished teas. Depending on the type of tea being made, oxidation is prevented altogether, or deliberately initiated, controlled then stopped. Much of the oxidation process revolves around polyphenols and the enzymes polyphenol oxidase and peroxidase. When the cells inside tea leaves are damaged and the components inside are exposed to oxygen and mix, specifically when polyphenols in the cell’s vacuoles and the peroxidase in the cell’s peroxisomes mix with polyphenol oxidase in the cell’s cytoplasm1 a chemical [...]