What Is Oolong Tea? The Tea Between Green and Black
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Green tea tastes fresh and grassy. Black tea tastes malty and bold. Oolong lives in the wide space between them, and that is what makes it so interesting. So what is oolong tea? It is a traditional Chinese tea made from the same plant as green and black tea, Camellia sinensis, but only partly oxidized. Depending on the style, oxidation can range from about 8 percent to 85 percent, which is why one oolong can taste like fresh flowers and another like roasted nuts and stone fruit.
This guide explains how oolong is made, the major styles and where they come from, how to brew it properly, and how it compares with green and black tea.
Key takeaways
- Oolong is a semi-oxidized tea, between green (barely oxidized) and black (fully oxidized).
- Oxidation ranges widely, roughly 8 to 85 percent, creating very different flavors.
- The main producing areas are Fujian and Guangdong in China, and Taiwan.
- Oolong suits multiple short steeps, at 180 to 205°F (80 to 95°C).
- It contains caffeine, in amounts that vary with the leaf and processing.
In this article
- What is oolong tea?
- How oolong is made
- Famous oolong styles
- Oolong vs green vs black tea
- How to brew oolong
- FAQ
What is oolong tea?
The Chinese name, wūlóng, means “black dragon.” One explanation is that early oolong leaves were dark, long and curly, like a small dragon, but the true origin of the name is not firmly established.
What defines oolong is not where it grows but how it is processed. All true teas come from the same plant species. Green tea is heated soon after picking to stop oxidation. Black tea is allowed to oxidize fully. Oolong producers stop partway, and where they stop shapes the whole character of the tea.
Light vs dark oolong
- Lightly oxidized oolongs are greenish, floral and creamy, closer to green tea.
- Heavily oxidized or roasted oolongs are dark, with flavors of toasted grain, caramel, stone fruit and minerals, closer to black tea.
How oolong is made
Oolong is one of the most labor-intensive teas to produce. Timing and temperature need close control at every step.
- Withering: fresh leaves are spread out, traditionally in strong sun, to soften and lose some moisture.
- Bruising and oxidation: the leaves are moved and handled so their edges bruise, which lets oxidation begin. This can be repeated several times until the tea maker reaches the level of browning they want.
- Rolling and shaping: leaves are rolled or twisted, either into long strips or tight balls, depending on the style.
- Firing: heat stops oxidation and dries the leaf. Some oolongs are then roasted, sometimes repeatedly, for deeper toasty flavors.
The amount of time between picking and final drying decides how oxidized the tea becomes. That single variable explains much of the huge range within the category.
Famous oolong styles
| Style | Region | Character |
|---|---|---|
| Tieguanyin | Anxi County, Fujian | One of the historic oolongs of Fujian; made in lighter and roasted versions |
| Da Hong Pao | Wuyi Mountains, Fujian | Famous Wuyi oolong, usually dark and roasted |
| Dancong (Phoenix oolong) | Guangdong | Long strip-style leaves known for floral and fruity aromas |
| Dong Ding | Taiwan | One of Taiwan’s classic oolongs |
| Oriental Beauty | Taiwan | Also called Dongfang Meiren; a celebrated Taiwanese specialty |
| Alishan and Lishan | Taiwan high mountains | Taiwan’s prized high-mountain oolongs |
| Baozhong | Taiwan | The least oxidized Taiwanese oolong |
If you are new to oolong, try one light style (such as Baozhong) and one dark, roasted style (such as Da Hong Pao) side by side. Brew both the same way, taste them warm, then again as they cool. The contrast shows how wide the category is, and it quickly tells you which end of the spectrum you enjoy. Ask your tea seller how oxidized and how roasted each tea is; good sellers know.
Oolong vs green vs black tea
| Green tea | Oolong | Black tea | |
|---|---|---|---|
| Oxidation | Minimal | Partial, roughly 8 to 85% | Full |
| Typical flavor | Grassy, vegetal, fresh | Floral to roasted, fruity, creamy | Malty, robust, brisk |
| Water temperature | About 175°F (80°C) | 180 to 205°F (80 to 95°C) | Boiling |
| Re-steeps | 2 to 3 | Often 4 or more | Usually 1 |
| With milk? | Rarely | Rarely | Often |
Does oolong have caffeine?
Yes. Like all teas from Camellia sinensis, oolong contains caffeine. The amount varies with growing area, harvest timing and processing, so there is no single number. For context, the US FDA lists about 37 mg of caffeine in a 12 oz cup of green tea and about 71 mg in a 12 oz cup of black tea; oolong is not listed. Our guide on coffee vs tea caffeine puts these numbers next to coffee.
How to brew oolong tea
You can brew oolong in a regular mug or in the traditional gongfu style, which uses a small pot or gaiwan, more leaf and many short steeps.
| Western style (mug or teapot) | Gongfu style (gaiwan or small pot) | |
|---|---|---|
| Leaf | About 1 heaped tsp (3 g) per 8 oz (240 ml) | 5 to 7 g per 3 to 4 oz (100 ml) |
| Water | 185°F (85°C) for light; 205°F (95°C) for dark | Same |
| Time | 2 to 5 minutes | 20 to 30 seconds, adding a little time each round |
| Steeps | 2 to 3 | 5 or more |
- Rinse rolled oolongs with a quick splash of hot water and discard it. This helps tight balls start to open.
- Steep and taste. Light oolongs prefer the lower temperature; roasted ones like hotter water.
- Keep the leaves. Watch rolled balls unfurl over several infusions into whole leaves.
Oolong at Feel Espresso
We do not currently sell oolong. If you are exploring the space between green and black tea, here is how to approach it with our tea collection: for the floral side of oolong, try our Jasmine green tea, hand-picked and paired with fresh jasmine blossoms. For the toasty side of dark, roasted oolongs, our Hojicha is a roasted green tea powder with toasted cereal notes and low bitterness. And if you love a bold, malty cup, English Breakfast is the full black-tea end of the scale.
Oolong tea FAQ
Is oolong green tea or black tea?
Neither. It is its own category: partly oxidized, sitting between the two in both processing and flavor.
What does oolong tea taste like?
It depends on the style. Light oolongs taste floral, buttery and sweet. Dark and roasted oolongs taste toasty, nutty, fruity and mineral.
Can you add milk to oolong?
You can, especially to dark roasted oolongs, but most people drink oolong plain to taste its aroma.
How many times can you steep oolong?
Good oolong often gives several steeps, especially with gongfu brewing, where five or more short infusions are common.
Sources
- Oolong. Wikipedia. en.wikipedia.org
- Spilling the Beans: How Much Caffeine Is Too Much? U.S. Food and Drug Administration. fda.gov
Facts checked in October 2026.
Keep reading: Coffee vs Tea Caffeine · Why Britain Drinks Tea · Tea