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Types of Tea Explained

Here's how green, white, oolong, black, and pu-erh tea all come from the same plant, and what actually makes them different.

Same leaf, different fermentation levels

Green, white, oolong, black, and pu-erh tea are all made from the leaves of the same tea plant, Camellia sinensis. The flavor, color, and name change entirely depending on how much the leaves are oxidized and fermented.

Green tea

Made by applying heat immediately after picking to halt the oxidation enzymes, resulting in a tea with fermentation close to zero. It retains the leaf's fresh, slightly grassy and astringent character.

White tea

Made from young leaves and buds with minimal processing, just lightly withered, resulting in a very low level of fermentation. The flavor is subtle and smooth with a slight natural sweetness.

Oolong tea

Partially fermented, falling somewhere between green and black tea. Because fermentation levels vary widely, oolong's flavor spans a broad range, from floral and light to deep and toasty.

Black tea

Made by fully oxidizing the leaves, which is why it's called black tea in English. It has a deep color and a rich, full-bodied flavor, and is often enjoyed with milk or sugar.

Pu-erh tea

Fermented and then aged over a long period through microbial post-fermentation. Like wine, pu-erh tends to become smoother with less astringency and develop a deeper, earthy character the longer it ages.

How herbal tea differs

Herbal teas like chamomile or peppermint tea aren't made from tea plant leaves at all, but from steeped flowers, herbs, or fruit. Technically, these are classified as tisanes rather than true tea, and most contain no caffeine.

Green tea and black tea start as the same leaf

Green, white, oolong, black, and pu-erh tea are all made from the leaves of the same plant, Camellia sinensis, but they end up tasting and looking completely different depending on how much the leaves are oxidized and fermented. Understanding this single concept, fermentation level, makes it much easier to tell the different types of tea apart.

How water temperature changes what you taste

The right brewing temperature varies a lot by tea type: delicate green and white teas are usually brewed with cooler water, around 70 to 80 degrees Celsius, to avoid drawing out excess bitterness, while black tea and pu-erh are typically brewed closer to boiling to fully release their bolder flavors. Using water that's too hot for a light tea, or too cool for a dark one, is one of the most common reasons a cup doesn't taste the way it's supposed to.

Frequently Asked Questions

Why is pu-erh tea considered better the longer it's aged?

Pu-erh goes through a post-fermentation process driven by microorganisms, so, similar to wine, the longer it ages, the more its astringency fades, its flavor smooths out, and its earthy character deepens, according to common understanding.

Isn't herbal tea just another type of tea?

Technically, no. Drinks like chamomile or peppermint tea, made from flowers, herbs, or fruit rather than tea plant leaves, are classified separately as tisanes, and most of them contain no caffeine.