loose leaf oolong teas

Ali Shan

High-mountain Taiwanese oolong from the Ali Shan range — grown at elevations above 1,000m where cool temperatures, persistent mist, and slow leaf development produce a naturally silky, delicately sweet cup unlike anything grown at lower altitudes. Ali Shan is one of the benchmark high-mountain oolongs in the Taiwanese tea tradition — lightly oxidised, with a characteristic milky sweetness and clean floral notes that develop beautifully across multiple steepings. The right starting point for anyone new to Taiwanese oolong who wants to understand why the high-mountain designation matters.

Milk Oolong

Milk Oolong — Jin Xuan — is named for its naturally creamy, milk-like character, which comes from the cultivar rather than from any dairy addition. There is no milk in Milk Oolong. The creamy texture and gentle sweetness are the natural expression of the Jin Xuan tea plant grown at altitude in Taiwan. It is one of the most consistently popular oolongs in the Adagio range for a simple reason: it tastes like nothing else. The natural buttery sweetness is immediately distinctive, and it requires nothing added — no milk, no sweetener, nothing. Just hot water and the right amount of leaf.

Jade Oolong

A lightly oxidised Taiwanese oolong with the vivid green character that gives it its name — processed closer to the green end of the oolong spectrum, producing a cup that combines the fresh, clean quality of a fine green tea with the natural sweetness and floral depth that only oolong achieves. Jade Oolong is one of the more versatile everyday oolongs in the collection: accessible enough for anyone new to the category, complex enough to reward attention across multiple steepings. Cold brews particularly well.

Ti Kuan Yin

Iron Goddess of Mercy — Tie Guan Yin (鐵觀音) — is the most internationally recognised Chinese oolong and has been for centuries. Produced primarily in Anxi County, Fujian province, Ti Kuan Yin's characteristic orchid-like floral notes, natural sweetness, and a clean finish that develops in the throat after swallowing (the huigan quality that serious oolong drinkers value) make it one of the most satisfying loose leaf oolongs available at any price point. Adagio's Ti Kuan Yin uses the medium-roast profile that reflects the traditional style — more complex than the lightly roasted green-oolong style that has become common, but less intense than a fully roasted Ti Kuan Yin.

Wuyi Ensemble

Rock oolong from Wuyi Mountain — a UNESCO World Heritage area in Fujian province whose dramatic rocky cliffs and mineral-rich soil produce oolongs with a characteristic "rock taste" (yan yun, 巖韻) that no other terroir replicates. Wuyi oolongs are heavily oxidised and traditionally roasted, producing a deep, complex, mineral cup with natural notes of roasted nuts, dark fruit, and what serious tea drinkers describe as a mineral coolness that lingers long after the cup is empty. The most intensely complex oolong in the Adagio collection.

Formosa Oolong

One of Taiwan's most celebrated traditional oolongs — medium-to-heavily oxidised, with a honey-amber liquor and a warm, slightly honeyed character that sits closer to black tea than to the lighter high-mountain styles. Formosa oolongs represent the island's historical oolong tradition before the high-mountain category came to dominate — a style that rewards revisiting for its depth and warmth.

Peach Oolong

The most popular flavoured oolong in the range — and one of the most broadly popular teas across the entire Adagio collection. Peach Oolong layers ripe peach character over a Taiwanese oolong base, producing a naturally sweet, aromatic cup that appeals to drinkers who love the idea of oolong but want a more immediately accessible flavour as an entry point. Cold brewed over ice it becomes one of the best warm-weather teas in the range: naturally sweet, slightly floral, with a vivid peach character that tastes like summer in a glass.

Light oxidation (10–20%)

— Ali Shan, Milk Oolong, Jade Oolong. Fresh, floral, and delicate with a natural sweetness and a cup that reads closer to fine green tea than to black. The entry point for anyone coming to oolong from green tea.

Medium oxidation (30–50%)

— Ti Kuan Yin, Formosa Oolong. More body, more complexity, a rounder cup with both floral and deeper earthy notes. The classic oolong range that most people picture when they think of oolong.

Heavy oxidation (60–80%)

— Wuyi Ensemble. Closer to black tea in body and intensity, but with a mineral complexity and distinctive terroir character that black tea never achieves. The entry point for anyone coming to oolong from black tea.

Flavoured oolongs

— Peach Oolong. Light-to-medium Taiwanese oolong base with natural fruit character that makes the category immediately accessible. The right starting point for anyone who hasn't tried oolong before.

Western Brewing (Easiest)

• Water temperature — 85–91°C, below boiling. Lighter oolongs (Ali Shan, Milk Oolong) benefit from the lower end of the range; heavier oolongs (Wuyi Ensemble) tolerate the higher end.
• Leaf quantity — one heaped teaspoon (2–3g) per 250ml. Oolong leaves are bulky; measure by weight for consistency.
• Steep time — 3–4 minutes for the first steep. Most loose leaf oolongs yield 2–3 quality steepings from a single measure — don't discard the leaves after the first cup.

Gongfu Brewing (Best Results)

Gongfu-style oolong brewing — multiple very short steepings in a small vessel — is how oolong is traditionally drunk in China and Taiwan, and for good reason: it reveals the tea's development across a session in a way that a single long steep never does. Ali Shan at the third steeping tastes different from Ali Shan at the first — more open, more complex, the floral notes more fully developed. Wuyi Ensemble at the fifth steeping shows mineral notes that the first didn't contain.

• Vessel — a small gaiwan (100–150ml) or a dedicated Yixing teapot
• Leaf ratio — 5–7g per 100ml. Higher than Western brewing because the multiple steepings distribute the extraction across the session
• Temperature — same as Western brewing, 85–91°C
• First steep — 20–30 seconds, discard or drink as the "opening steep"
• Subsequent steeps — add 10–15 seconds per steep. Expect 5–8 quality steepings from quality loose leaf oolong

Antioxidants

— oolong contains catechins, theaflavins, and thearubigins — the antioxidant compounds present in both green and black tea at varying concentrations depending on oxidation level. Oolong's unique antioxidant profile is the subject of ongoing research interest.

Metabolic associations

— oolong is one of the more studied teas for metabolic associations, and its intermediate oxidation profile has attracted ongoing research interest in this area.

Blood glucose associations

— oolong polyphenols are the subject of ongoing research interest regarding associations with blood glucose management after meals.

Moderate caffeine with L-theanine

— approximately 30–50mg of caffeine per 250ml cup, paired with L-theanine — a combination many drinkers describe as producing a more calm, focused quality than higher-caffeine beverages alone.

Dental health

— oolong tea's fluoride content and polyphenol profile have attracted research interest in the area of dental health. Evidence is at an early stage.

Oolong vs. green tea

— green tea is lighter, more vegetal, and less complex than oolong. If you drink green tea and want more body, more depth, and more variety without the full intensity of black tea, light-to-medium oolongs (Ali Shan, Milk Oolong, Ti Kuan Yin) are the natural next step.

Oolong vs. black tea

— black tea is more assertive, more astringent, and more straightforwardly bold than oolong. If you drink black tea and want something more complex, more nuanced, and more varied across steepings, medium-to-heavy oolongs (Ti Kuan Yin, Wuyi Ensemble) are the natural direction.

Oolong vs. both

— oolong is the tea category that rewards the most exploration. No two oolongs taste alike. The spectrum from light Taiwanese high-mountain to heavy Wuyi rock oolong is as wide as the difference between any two wine varietals. If you've settled into a single tea routine and want to discover what tea can actually be, oolong is the category to start with.