Tea Categories: Green Tea 101
After a lengthy hiatus, we’re back! Thank you to anyone who has read, commented, and (hopefully) enjoyed this site so far. I’m hoping to be able to post much more frequently from here on in…
Continuing on in our “Tea Categories” series, the next class of tea in the spectrum is green tea.
Whereas white tea, due to its relatively recent arrival in the West, is still somewhat of a novelty to the casual tea drinker, most people who have consumed any significant quantity of tea will likely have tried some type of green tea at some point. A green tea may have even been among the first cups of tea you ever tasted. Perhaps it was an intoxicatingly scented jasmine at a Chinese restaurant. Perhaps it was that bright green, opaque, roasted rice tea you had at your favourite sushi place. Maybe it was even some of that matcha (below) you’ve heard so much about. Whatever it was, if you’re reading this it was hopefully an enjoyable experience, or at least enjoyable enough to make you wonder what else is out there.
Ceremonial grade matcha, prepared using a traditional bowl (chawan) and whisk (chasen)
As a category, green tea is massive – vastly larger than white tea in terms of styles possible, and styles produced – and lumping so many diverse teas into one monolithic whole does something of a disservice to those who create them. My goal in this post is to try to provide insight into the great variety of green tea that exists, while hopefully answering some of the questions that seem to arise frequently. So let’s dive right in!
How is green tea made? How does it differ from other types of tea?
Recall from previous posts that all tea is made from varietals of the Camellia sinensis plant; the differences between and among teas, again, occur in how the leaves are processed (or not) once they’re picked. So what makes green tea different?
The key is a step commonly called fixing, firing, kill green, or, in Mandarin, shaqing (“sha-ching”, 杀青). This is the most essential step in creating green tea. Unlike white tea, which is dried gradually after being plucked, as soon as leaves destined to become green tea arrive at a processing facility, they are ‘fixed’. Fixing is basically applying a high level of heat to the leaves for a short period of time to prevent oxidation from occurring. In other words, fixing is the process that ensures green tea stays green, rather than oxidizing further to become an oolong or black tea.
Fixing is done in different ways depending on the region and the style of the person making the tea. Chinese teamakers overwhelmingly use pans resembling giant woks to fix their teas, whereas Japanese teamakers tend to use a short blast of superheated steam to deactivate the enzymes that cause oxidation. Teamakers from other countries may use either method – or one of a variety of other methods – depending on the tea they want to produce and their personal styles. (I’ll be exploring the topic of fixing in more depth in a future entry.)
Once the fixing is done, the teamaker’s creativity comes into play in the rolling and shaping process. Particularly in China, teamakers have refined their skills over millennia to form tea leaves into an astounding variety of shapes, everything from flat needles to snail-like spirals to round balls to whimsical, pigtail-like curls (see below for a couple examples.)
The distinctive flat needles of a delicious Longjing (also known as Dragonwell or Lung Ching, 龙井茶), top, and the equally distinctive ball-like Jasmine Pearls (also known as Dragon Pearls, or 小龙)
Regardless of the shape into which the tea leaves are formed, the rolling and shaping process generally serves both cosmetic and functional purposes. Not only is this process a way of creating tea leaves that look cool and distinctive (as is often the case in China), or appealingly uniform (as in Japan), but it also helps reduce the amount of moisture in the leaves, thus deterring the leaves from becoming moldy and preparing them for further processing.
The last step in this whole sequence is drying. Once the previous processing has been completed to the teamaker’s satisfaction, all that’s left is to reduce the tea’s moisture content to a level (generally 2-3% water by volume) where it will be shelf-stable. As with the fixing process, drying can be done in a number of ways, but the most common modern method is to ‘bake’ the tea in large electric ovens.
Knowing the proper length of time to dry a given tea is the point at which the teamaker’s acquired skills come into play. While there are many ways in which the process of making tea can go wrong, drying is particularly important, as mistakes made at this point can negate everything done previously and completely ruin the tea. If the drying is done too long or at too high a temperature, the tea will be too brittle and prone to breakage, and may taste unpleasantly seared. If not done long enough, the moisture content will be too high, potentially causing mold growth. The drying process is not unique to green tea – all teas experience it to a degree – but given the relative delicacy of the flavours of green tea as compared with those of more oxidized teas, processing flaws are much more apparent in greens than they might be in, say, an Assam black tea.
Where is green tea usually grown?
I can see your eyes glazing over with all this talk about tea processing (it’s OK, I understand!), so let’s move on to something different: Who actually grows all this green tea?
It should come as no surprise that China, the ancestral home of tea, is tops in this respect. In 2010, China grew more than a quarter of the world’s tea, and it’s estimated that 70-75% of that quantity was made into green tea.
China certainly doesn’t have a monopoly on green tea production, though. While Japan, due to its shortage of farmland, grows a small amount of tea in absolute terms, the vast majority of it is of good to extraordinarily good quality. And almost all of it is green tea. Japan grows no white tea, virtually no oolong tea, and a minuscule amount of black tea (which I highly recommend trying if you encounter some – it is exceptional, just like most other Japanese tea. But I digress.) The overwhelming majority – over 99% according to one source – is comprised of the various types of greens for which Japan has become renowned. (See below for a listing of some of the best types.)
The infused leaves of a beautiful Japanese Genmaicha (“brown rice tea”, 玄米茶)
China and Japan may produce the bulk of the green tea we consume, but they’re far from the only producers. Korea, while not even in the top 30 in world tea production, produces astonishingly good green (and yellow) teas, though they can be very expensive, sometimes rivalling the priciest Chinese and Japanese teas. Taiwan produces a small amount of green tea, which ranges from average to excellent quality. Vietnam, long a producer of lower-grade greens, has now begun to develop its tea industry and some wonderful teas are starting to emerge. I had the good fortune to try an exceptional Vietnamese green a short while ago, and hope to be writing about it on this site soon.
Small amounts of green tea, steadily improving in quality, are also now being produced in places like India, Nepal, Sri Lanka, and Kenya, long bastions of black tea production. It’s going to be exciting to see – and taste – how these countries’ forays into green tea production develops.
The steeped liquor of a delightful green from Chamong Group’s Lingia Tea Estate (Darjeeling, India)
What are some of the most famous/best green teas?
‘Best’ is always subjective, but that said, there are certain types of green teas that any serious tea drinker should know. Recognizing that any particular tea is only as good as its manufacture, storage, and preparation, and that this is by no means a comprehensive list, these are the top teas I would recommend to try to someone just starting to venture into green tea. They’re listed in no particular order – all are delicious, distinctive teas with fascinating histories. (The names in parentheses represent other names under which the particular tea may be sold, as well as the ideograms/characters corresponding to that tea in the country of its production.)
- Longjing (Dragonwell, Lung Ching; 龙井茶) – China (Zhejiang Province)
- Gyokuro (Precious Dew, Jewel Dew, Jade Dew; 玉露) – Japan
- Lushan Yunwu (Cloud Mist, Wen Lin, 庐山云雾茶) – China (Jiangxi Province)
- Sencha (煎茶) – Japan
- Ujeon (우전) – Korea
- Genmaicha (“Brown Rice Tea”, roasted rice tea, 玄米茶) – Japan
- Taiping Houkui (太平猴魁) – China (Anhui Province)
- Hojicha (焙じ茶) – Japan
- Huangshan Maofeng (黄山毛峰) – China (Anhui Province)
- Matcha (powdered green tea, 抹茶) (made from a partially finished tea called Tencha, 碾茶) – Japan
I’ll explore some of these in more depth, complete with detailed tasting notes, in upcoming entries. (Especially my favourite ones!) 😉
A flavourful sencha (#4) from Kagoshima Prefecture, Japan (steeping: 3g @ 75 degrees Celsius – 167 degrees Fahrenheit – for 2 min.)
What can you tell me about the health benefits of green tea?
As with all teas, there is a staggering amount of misinformation out there regarding green tea. There is, however, quite a bit of good information as well, as green tea is the most studied type of tea with respect to its effect on human health. While I have refrained from attaching references here in order to avoid this entry looking like an academic paper, I’m happy to provide them to anyone curious. Without further ado, here are just a few of the many solidly researched green tea facts:
- Green tea contains antioxidants called catechins in a substantial quantity. The most potent – and studied – of these catechins is called EGCG (epigallocatechin gallate). It may sound like it could be a punk club in NYC, but EGCG is a powerful little antioxidant that has been shown to inhibit the growth of certain types of cancer cells, including those that cause brain, prostate, cervical, and bladder cancers. One caveat, though – for those who already have cancer, some of the compounds in green tea may decrease the efficacy of chemotherapy treatments.
- Green tea consumption, even when measured over a very short period, can have a beneficial effect on the cardiovascular system, improving systolic and diastolic blood pressure in addition to inhibiting the absorption of ‘bad’ (LDL) cholesterol in the blood, raising ‘good’ (HDL) cholesterol levels, and lowering triglyceride levels.
- Green tea has anti-inflammatory effects and may reduce symptoms of inflammation in those with IBD and Crohn’s Disease.
- In population-based studies, green tea has been shown to have hepatoprotective effects, reducing the incidence of liver-related problems and inhibiting the damaging effects of toxic substances such as alcohol.
- An Israeli study showed EGCG, when fed to mice with Parkinson’s or Alzheimer’s Disease, slowed further progression of the diseases and even appeared to reverse some of the damage already done to neurons in the diseased populations.
And there are many more. It bears repeating, though – and I will shout this from the highest mountain – that the health benefits of tea, while real and substantial, should NEVER be your sole reason for drinking tea. Tea is not a panacea for anything and everything that ails you. It is for this reason that when I’m asked “Which tea is good for (insert ailment/complaint here)?”, I always answer, “The one you’re going to drink.” There is no point in purchasing a tea you don’t like just for its perceived health benefits, because drinking it will always feel like a detestable chore instead of the true sensuous pleasure it can be and is. Drink a tea that you love, and rest easy knowing it’s one of the healthiest beverages you can drink.
NB: I have refrained from discussing the caffeine content of green teas here because this entry is already crazy long; and more importantly because I’ll be devoting a future post entirely to the tea and caffeine question. But if you have a specific burning question on this topic, please feel free to leave a comment and I’ll answer it as best I can.
I call this the “Japanese stoplight” 🙂
Top to bottom: Hojicha (焙じ茶) ; Sencha (煎茶); and a matcha-dusted Genmaicha (抹茶)
All photos © 2013 Del Tamborini
Well, that just about does it for this particular entry. A special thank you to my dear friend Jeehye for providing the Hangul (Korean) script for ‘Ujeon’, and an equally special thank you to you for reading this!
I look forward to your comments, and happy tea drinking!
What is tea?
Welcome to delano teas!
For this site’s auspicious first entry, it only seems appropriate to start with the basics. While this information may be a given to some, if you’re new to the world of specialty tea, this is the foundation on which you’ll develop your knowledge and your palate.
What is tea?
Without getting too scientific, tea in its most correct sense is ONLY the beverage made from the leaves of the Camellia sinensis plant. Virtually all the tea you’ll encounter will be made from the original tea plant, Camellia sinensis sinensis; its Indian cousin, Camellia sinensis assamica; or, more accurately, one of the thousands of unique varietals created from one or both of these.
Several Steven Smith Teamaker teas, including a delightful Earl Grey crafted with Dimbula, Uva, and Assam black teas and Calabrian bergamot (Blend No.55, Lord Bergamot); a pure Pacific Northwest peppermint tisane (Varietal No. 45, Peppermint Leaves); and a Chinese Mao Feng green tea blended with spearmint and Australian lemon myrtle (Blend No.39, Fez)
What isn’t tea, then?
Essentially any plant or herb that can be infused in a manner similar to tea, but is not made from the Camellia sinensis plant, is not technically ‘tea’, though popular usage often suggests otherwise. I prefer to call these non-teas tisanes, as the term encompasses everything not made from the tea plant, but ‘herbals’ or ‘infusions’ are frequently used, if not always completely accurate, terms as well.
Some of the more common tisanes include those made from rooibos, yerba mate, camomile, and mint, to name just a few.
While this site won’t focus on tisanes, I personally don’t mind them and may even write about them on occasion (especially if I receive requests! Hint, hint!). Stay tuned!
Where did tea originate? How did it spread?
No one knows exactly when tea was first consumed – some legends claim it was nearly 5,000 years ago – but there is little dispute the first teas originated in Yunnan Province in China (Camellia sinensis means, literally, ‘Chinese camellia’). Wild-growing tea trees are indigenous to the area where Yunnan borders Burma (Myanmar) and Laos, and at some point over the centuries, the local indigenous peoples created the first beverages from their leaves.
From Yunnan, awareness of tea spread to the rest of China and then to other parts of Asia with the growth of overland trading and marine-based shipping. It was not until roughly 400 years ago, though, that people in the West found out about tea, when Dutch and Portuguese traders began shipping tea from China’s coastal Fujian Province back home to Europe. Tea and tea drinking spread quickly through much of the continent, and eventually it was brought to the New World when the Dutch imported it to their colony of New Amsterdam, before the English took over the colony and renamed it New York.
The English, though the last Europeans to discover tea, arguably embraced it the most fervently. They embaced it so much, in fact, that by the end of the 18th century they were buying such a great quantity from China they were having difficulty paying the Chinese. To counter this, they began to trade Indian opium into China. This enraged the Chinese and eventually led to the Opium Wars of 1839-1842. While the English were ultimately victorious, gaining the colony of Hong Kong and free trading rights within China, they knew they could not continue to rely solely on China to satisfy their demand for tea.
This led to another of the most important developments in tea history: the founding of India’s tea industry. While the indigenous population of what is today the state of Assam had long known of the existence of a wild tea plant, it was not until the English recognized its potential in the mid-1800s that they began to cultivate it on a large scale in India and Sri Lanka (then Ceylon) to reduce their dependence on Chinese tea. It had the desired effect, and led to many innovations in the tea world, some of which are still in use today.
Where is tea grown today?
With the explosion in tea’s popularity worldwide, the number of countries and regions growing tea is steadily increasing. New tea frontiers aside, though, the overwhelming majority of the world’s best tea still comes from Asia. China, Taiwan, India, Sri Lanka, Japan, Korea, Nepal, and increasingly, Vietnam grow the majority of the teas we’ll be talking about on this site. Other notable Asian producers include Thailand, Malaysia, Indonesia, Bangladesh, and Iran, though high-quality teas from these countries are less abundant than the first set above.
Tea growing at the Doi Mae Salong 101 Tea Plantation, Doi Mae Salong, Thailand
Tea is also grown on a large scale in Africa, specifically Kenya, Tanzania, Malawi, Rwanda, and a handful of other countries. Most of this tea is still destined for lower-grade mass market teabags, but there is a small but growing number of high-quality teas being manufactured by select gardens and artisanal teasmiths throughout the region.
In addition to Asia and Africa, gardens are now being established (and in some cases, already producing) in places like Australia, New Zealand, the United States – especially Hawaii – and even Canada (I’m not kidding!) While it will take a while for these and other nontraditional tea growing areas to gain traction in the tea world, it’s going to be an exciting journey, and one I hope to at least somewhat chronicle for you on this site!
What are the main types of tea?
We will talk about this in much further detail in subsequent entries, as tea processing is a massive topic, but in general there are six categories of tea, all of which are manufactured from the leaves of the Camellia sinensis. The six classes are:
White – Yellow – Green – Oolong – Black – Post-fermented/”dark”
Yellow teas are still quite difficult to find, as is pu-erh in some places (though thankfully, it’s relatively abundant here in Vancouver), but no matter where you’re reading this, white, green, oolong, and black teas should be available to some degree (and of course, there’s always online!)
The easiest way to imagine how different types of tea come to be is to visualize what happens when you bite into an apple and set it down. The browning that occurs after a short while, scientifically known as enzymatic oxidation, is essentially what causes the differences between and among types of tea. (Many more variables go into creating specific teas, but more on that later.)
You’ll often hear the term ‘fermentation’ used instead of ‘oxidation’, though the latter is vastly more correct unless you’re talking about pu-erh, the one tea you’ll likely encounter that is actually fermented (like wine) and that gets better with age (also like wine!). For this reason, unless the subject is pu-erh, I will always use the term ‘oxidation’ on this site.
At one end of the spectrum, white and green teas are the least oxidized. Occupying the middle of the spectrum, oolong – the largest category of teas – is partially oxidized tea, ranging from teas similar in colour to green teas to more oxidized teas one could easily mistake for black. At the other end of the spectrum is black tea, which ranges from mostly to completely oxidized. Yellow and post-fermented teas don’t necessarily fit neatly into the spectrum, so we’ll set aside discussing those for the moment.
In subsequent posts we’ll explore each of these categories of tea in much greater detail. The world of tea is incredibly vast, far more than we can imagine, and it could take a lifetime and then some to fully grasp it. So let’s get started, shall we? 🙂 Any comments, suggestions, or questions about this entry, or about tea in general, are more than welcome!
Thank you for reading!