Green, Black, Oolong, White and Pu-erh Explained

Walk past the tea shelf and you'll see green, black, oolong, white and pu-erh sitting side by side, all from the same plant, Camellia sinensis. The difference isn't the leaf itself but what happens to it after picking. This page walks through each type so you can work out which suits your cup, then points you to samplers so you can taste your way to a favourite instead of guessing.

Green tea: the plant barely touched

Green tea is picked and heated almost straight away, either steamed or pan-fired, which stops the leaf from oxidising. That keeps it close to the fresh leaf: grassy, vegetal, often a little sweet. Japanese sencha is a good example of the steamed style, with a bright, clean cup that suits anyone moving away from bagged black tea and wanting something lighter to start the day.

Black tea: fully oxidised for body

For black tea, the leaves are rolled and then left to oxidise fully before drying, which turns them dark and develops the malty, brisk character most teabag drinkers already know. Assam teas are a classic example of this style: a deep, reddish cup with notes of raisins, molasses or roasted plantain, and enough strength to stand up to milk if that's your habit.

Oolong: partly oxidised, wide range

Oolong sits between green and black. The leaves are rolled and allowed to oxidise only partway before the process is stopped, so the results vary enormously: some oolongs are light, floral and barely darker than green tea, others are roasted and dark like Da Hong Pao, a rock tea from the Wuyi mountains. This is the type to explore if you like variety, since the same leaf can be reused for several infusions, often changing slightly each time.

White tea: the lightest touch

White tea gets the least handling of all. Young buds and leaves are simply withered and dried, with no rolling and no deliberate oxidising step. The result is delicate and subtle rather than bold, closer to a quiet infusion than a brew. Silver Needle, made only from the downy young buds, is the classic example of how restrained this style can be.

Pu-erh: aged and earthy

Pu-erh takes a different path again. After initial processing, the leaves are left to age, sometimes for years, which gives the tea its soft, earthy, woodsy character rather than the brightness of a fresher tea. That earthiness can be an acquired taste, so plenty of pu-erh is blended with spice, citrus or chocolate to soften and round it out for anyone trying the style for the first time.

How to choose

A few things matter more than the label:

• Oxidation level roughly predicts strength: white and green are lighter, oolong varies, black and aged pu-erh are the boldest.
• Loose leaf generally allows more control over steeping time and strength than a fixed teabag, and oolong and pu-erh in particular reward a second or third steep.
• Flavoured versions (chai spice, chocolate, citrus, vanilla) sit on top of any of these base types and change the experience more than the base tea itself does.

Since taste is personal and the five types differ so much, a sampler is the simplest way to work out what you actually like before settling on a full bag of any one tea.

Questions people ask

Which type has the most caffeine?

There's no fixed rule, since caffeine depends on the plant, the leaf grade and how long you steep it, not just the type. As a general pattern, black and pu-erh tend to feel stronger than white or green, but steeping time and amount of leaf will change that more than the label will.

Is pu-erh the same as compressed brick tea?

Pu-erh is often sold pressed into cakes or bricks, but it doesn't have to be. What defines it is the ageing process, not the shape. Loose pu-erh, like a straightforward pu-erh loose tea, gives you the same earthy character without needing to break a compressed cake apart.

Can I reuse the leaves for another cup?

Yes, and it's worth trying, especially with oolong and pu-erh, where the leaves are often left whole and can be steeped several times, sometimes changing character slightly with each infusion. Green and white teas can usually be resteeped once or twice as well.

Do I need special equipment to get started?

No. A basic infuser or teapot and a kettle are enough. Follow the steeping guidance on the packet for time and temperature, since white and green teas generally want cooler water than black or pu-erh, and adjust from there to suit your own taste.