Compare two teas

Side by side across seven dimensions. There is no verdict and no winner — the purpose is to understand the difference, not to be told which to buy.

Assam

অসম চাহ

Black tea

Dian Hong

滇紅

Black tea

TeaHQ has written about this pair

Five black teas that share a processing route and almost nothing else. Anyone who has decided black tea is one flavour has met one of these and generalised from it.

Where it is from and what leaf
Assam: North-east India, native large-leaf assamica on a hot river plain.Dian Hong: Yunnan, China. The same large-leaf stock that becomes pu-erh.
What makes it distinctive
Assam: Full oxidation on assamica, giving the most body and the most malt.Dian Hong: High bud content, giving sweet-potato sweetness with almost no grip.
Commonly described as
Assam: Malty, brisk, heavy-bodied, with raisin and cocoa.Dian Hong: Sweet potato, honey and cocoa; thick and low in astringency.
Brewing
Assam: Boiling water, three to four minutes. Very forgiving.Dian Hong: 90 to 95 °C. Bud-heavy grades go bitter at full boil.
With milk?
Assam: Built for it.Dian Hong: Not traditionally — there is no astringency for milk to cut.
Who may prefer it
Assam: Anyone wanting a strong, forgiving mug with milk.Dian Hong: Anyone who dislikes astringency — the gentlest of the five.

In summary: Dian Hong is the easiest of the five to enjoy without milk and the best starting point for someone who has only met breakfast blends. Assam is the reference for what 'malty' means. The others are each doing something specific enough that liking one predicts little about the rest.

Point by point

DimensionAssamDian Hong
CategoryBlack tea · fully oxidisedBlack tea · fully oxidised
ProductionIn order: Withering → Rolling and shaping → Oxidation → Drying. bud and two leaves and second flush harvest.In order: Withering → Rolling and shaping → Oxidation → Drying. bud and one leaf and spring harvest.
OriginIndia — AssamChina — Yunnan
Flavourchocolate and fruity. full bodied, drying and rich in the mouth. Aroma: malt, raisin, cocoa, baked bread. Straightforward in character. Bold in intensity.sweet and chocolate. full bodied, smooth and rich in the mouth. Aroma: sweet potato, cocoa, malt, dried longan. Moderate in character. Moderate in intensity.
BrewingWestern brewing (teapot or mug): 1–1.5 g/100 ml at 95–100 °C, first steep 240s. Mug infuser brewing: 1–1.5 g/100 ml at 95–101 °C, first steep 180s.Western brewing (teapot or mug): 1–1.5 g/100 ml at 90–95 °C, first steep 180s. Gongfu brewing (gaiwan): 4–5 g/100 ml at 90–95 °C, first steep 8s of 6 authored. Mug infuser brewing: 1–1.5 g/100 ml at 95–101 °C, first steep 180s. Cold brew tea: 1–2 g/100 ml at 4–10 °C, first steep 21600s. Flash-chilled iced tea: 2–3 g/100 ml at 90–95 °C, first steep 90s.
Cultural contextUsed in Chai culture in India and Taiwanese bubble tea culture.Bud content drives the price, and 'golden tips' grades vary enormously in how much bud is actually present. A high proportion of gold in the dry leaf is visible, and is the one quality signal a buyer can check without brewing it.
Who may prefer itSomeone who wants the cup to assert itself and wants to enjoy it on the first cup. It tolerates an imprecise brew and takes milk.Someone who wants presence without being dominated and wants to enjoy it on the first cup. It tolerates an imprecise brew and is traditionally drunk plain.

Nothing above is a recommendation. The last row describes the drinker each tea suits, using each tea’s own authored fields and the same sentence structure for both, so neither can be framed as the safe choice.

Brew Assam · Brew Dian Hong