Green Tea: What it is, History, Rolling, Oxidation, and Terroir

Green Tea: What it is, History, Rolling, Oxidation, and Terroir

Green tea, along with white tea, is the purest and least processed category of tea. The principle that guides the processing of its leaves is to preserve their freshness, to bring back to our cup the season that green tea represents: spring, with its new and delicate energy.

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History of Green Tea

How we went from powdered tea to the leaf tea we know today

We have already discussed on our blog the history of tea and the different spellings of the word tea, so we will focus on the history of green tea and how we transitioned from powdered tea to leaf tea. Black tea and oolong tea did not exist in ancient times: green tea was the most consumed starting from the Song dynasty (960-1279) but at that time it was not consumed as we do now. Its leaves were first powdered and then pressed into cakes. To be consumed, the Chinese would break off a piece of the cake, crush it into powder, and then whisk it as we do today with matcha tea. This habit changed during the Ming dynasty (1368-1644) when Emperor Taizu prohibited the use and sale of these cakes introducing leaf tea, as we know it today. The Japanese did not like this innovation and for a long time preferred to continue consuming powdered tea, which is why in their traditional tea ceremony they consume Matcha.

coltivazione di tè verde con donna che raccoglie tè

Rolling and Processing of Green Tea

What is "rolling" and why is it so important

But let's go back to the processing processes of green tea. We said that green tea is the lightest of all because the impact humans have on the plant is minimal. Nevertheless, we need to extract and taste the flavor. To do this, we must slightly break the thick walls of the leaf cells, otherwise the essence of the tea will remain trapped in the cells. The rolling of the leaves serves precisely this purpose, crushing the leaves, bringing essential oils to the surface, and facilitating the entry of oxygen.

Oxidation of Green Tea

Among the teas with the lowest oxidation percentage

The next phase after rolling green tea is oxidation. Oxidation, even minimal, is inevitable, if only because it begins when the leaves are detached from the mother plant. At this point, the water content is too high and prevents the leaves from being processed. There is no tea that is not, even slightly, oxidized. Even white tea is. What varies among the different types is the percentage of oxidation. Green teas have low oxidation, along with white teas.

Whitering or Green Tea Withering

The "withering" phase of tea and the art of tea masters

Another very important process is that of whitering, which can be translated into Italian as withering. It is important that the loss of water from the leaves occurs slowly, but only the tea master knows how to carry it out, a lot depends on the weather. It is not the same to let them wither on a sunny day, or on a humid and cloudy day. In most cases, the tea is harvested and processed immediately, on the same day, which gives us the idea of a freshness frozen in the leaves, rich in Yang energy, ready to be released in the cup.

We will not go into the specifics of green tea processing because generalizing is quite useless.

green tea

The importance of terroir in Green Tea

Just like in wine, geology, geography, and climate make the difference

Every green tea, every tea master, every terroir requires different techniques and nuances.
With terroir, a French word borrowed from the world of wine, we mean the uniqueness of a place composed of its geology, geography, climate, and also cultural heritage.
Terroir is the composition of the soil and climate of a particular region, but also the relationships that the local people have with the plants, how they understand and treat them.

Summary of Green Tea Characteristics

  • In conclusion, we can say that green tea is mainly characterized by low oxidation.
  • The goal is to stop the oxidation of the leaves to preserve their freshness and bring it back to the cup.
  • Drinking a good cup of green tea should allow us, closing our eyes and focusing inward, to feel the invigorating energy of spring, a certain invigorating effect that only quality green teas can give us.

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