How to Choose Jasmine Green Tea for Milk Tea

Quick summary (TL;DR): ① There is no process called "printing flowers" — the correct term is scenting (窨花, read xūn); when the character is hard to type, old hands in the trade write "smoking" instead. ② Scenting is the only process that puts jasmine aroma inside the leaf; flavouring merely sprays it onto the surface, and GB 2760 lists tea among the foods that may not have flavourings added.

③ Three rounds is not the top grade, but for milk tea and fruit tea bases it is the point where value turns — anything finer gets flattened by dairy and fruit acid. Below: the four processes, a seven-step buying routine, and six traps.

One character first. It looks like a small thing, but it ties every judgement that follows together.

One character first: it is scenting, not "printing flowers"

The character 窨 carries the "cave" radical over the character for "sound", is read xūn, and means shutting something away in a closed space. Scented tea has an older name in the trade, "smoked flower tea", because the step consists of shutting tea and fresh flowers up together so the leaf takes in the aroma the flower gives off.

So the action in scenting is absorption, not mixing. The flowers are sieved out at the end.

This is the counter-intuitive part, and it is where new buyers most often get it backwards: the fewer flower petals left in the finished tea, the more likely it is to be good tea. In the physicochemical requirements of GB/T 22292-2017 Jasmine Tea, "jasmine flower residue" is capped at 1.0% for the special, superfine, first and second grades. The old saying in the trade — smell the flower, never see it — is exactly this.

Jasmine green tea for a tea base is not the same as jasmine tea for drinking straight

Both are called jasmine green tea, but the base for a drink and the leaf for a cup are judged differently, and the two standards can point you at opposite products. This is the one thing I most want new buyers to get straight.

A tea base has to survive three things: dairy, ice, and batch

The first test is milk. Dairy masks a good part of the tea character, which is why the tea-to-water ratio in a milk tea recipe is far higher than for drinking straight. One review of milk tea processing tabulates extraction parameters by base; for green tea the common range is 85–90 °C, a tea-to-water ratio of 1:30–1:50, and a tea-to-milk ratio around 2:1. Choose a jasmine green tea praised by drinking standards for being "elegant and lingering", add milk, and what is left is mostly milk.

The second test is ice. Aroma releases slowly at low temperature, so the scent that hits you in a hot cup may barely register in an iced one; a base needs aroma with penetration. The third test is batch: what a chain fears is not tea that is not good enough, it is tea that differs from the last delivery. That third test has little to do with rounds and a great deal to do with blending.

There is also a basic matter of temperature and time. Tea polyphenols and caffeine are where bitterness and astringency come from, and their extraction rates are sensitive to both. One study measured extraction as water rose from 60 °C to 100 °C: tea polyphenols climbed by the largest margin, caffeine next, amino acids least. Hotter water and longer steeping make bitterness grow faster than freshness.

The straight-drinking standard cannot be carried over

Judging jasmine tea for drinking straight means looking at freshness, the layers of aroma, and the returning sweetness. In the sensory requirements of GB/T 22292-2017, the aroma descriptor for the special grade is "fresh, lingering, strong and lasting"; below that the grades read "fresh and strong", "strong", "fairly strong", "weak", "floating", "coarse".

That vocabulary stops working the moment milk and ice are involved, because the fine detail it describes is largely flattened. The subtlety you paid a premium for in a cup of plain tea does not survive the milk.

So the advice is direct: fix the application first, then the tea. For plain tea and straight drinking, go up the rounds. For milk tea and fruit tea bases, three rounds is the better value.

Four processes, and where the money goes

Strip away the marketing and there are four ways jasmine green tea is made. Their costs are far apart, and they are getting harder to tell apart by eye.

Scenting: the real process, expensive in flowers and in hours

Scenting is the only process that gets aroma inside the leaf. The line runs: re-fire the base, condition the flowers, mix tea and flower, pile and scent, turn the pile, sieve out the flowers, re-fire, top-scent, then blend and pack. The middle steps can be repeated, and the number of repetitions is the number of rounds.

Parameter ranges commonly seen in the trade — processes and geographical-indication specifications differ by region, and these are common ranges from published sources, not values for any one product. Flower conditioning usually sits at 28–32 °C, and flowers go onto the tea once roughly 80% have opened. After mixing, the heap is commonly 35–55 cm deep at 38–48 °C, and once it reaches 45–48 °C in the first round the pile must be turned, opened out and cooled. A round typically runs 9–14 hours.

After sieving, the damp leaf is re-fired, commonly at 100–130 °C and dropping round by round so less absorbed aroma is driven off. Top-scenting finishes it: a small charge of the best flowers, often at a tea-to-flower ratio of 1:0.06–0.08, piled 3–6 hours, no turning and no re-firing.

The first round often carries a base note of white orchid (magnolia), commonly 0.5–1.0 kg per 100 kg of base, to hold up the concentration. The whole process takes several days — scenting is expensive not because of the flowers but because of labour, floor space, hours, and the waste that comes from fresh flowers refusing to wait.

Blending: the most maligned, and the one you cannot do without

Plenty of buyers hear the word blending and assume it means passing off inferior leaf. It is the opposite — the production specification for the geographical-indication product lists as the last refining step "blending and piling: assembling the grades into an even heap according to shape and quality". That is a standard operation.

The reason is simple. Tea base is an agricultural product: change the origin, the season, the picking standard or that year's weather, and this lot does not taste like the last one. Without blending, your next delivery does not taste like this one. For a single shop that hardly matters; for a chain it is a disaster.

What you guard against is not blending, it is blending that is not declared. Do not ask whether a supplier blends — ask whether the formula is fixed, whether it can be written into the contract, and whether a retained sample will be kept. Anyone who answers those three is more reliable than anyone promising "we never blend", which in an agricultural trade is a promise nobody can keep.

Flavouring: a hard regulatory line

Flavouring means spraying food flavouring onto the surface of the leaf and drying it. GB 2760 carries a list of foods to which flavourings and fragrances may not be added, and food category 16.02.01, "tea and coffee", is on it; GB 31608, the national food safety standard for tea published in 2023, restates that additive use in tea production must satisfy GB 2760.

Does that make every flavoured product illegal? Not necessarily — there is also the trade standard GH/T 1247-2019 Flavored Tea, which defines "perfuming flavored tea" as a product made from tea with food flavourings added, and lists it as a category of flavored tea. The point is that by that definition a flavoured product is not tea, it is flavored tea: it runs on a different standard and must not present itself, by name or by standard, as jasmine tea.

So the two simplest checks for a new buyer, neither needing expertise: does the ingredient list carry "food flavouring", and does the standard read GB/T 22292 or GH/T 1247. The senses confirm it — flavouring sits on the surface, hits hard at first, is gone by the third brew and dull when cold; scented tea releases with heat and lasts. Our range covers both: the scented teas list two ingredients only — green tea base and jasmine flowers — and one flavoured tea also lists edible flavouring, declared on the label.

Mixing in flowers, and pressing: spent flowers have a destination too

The spent flowers sieved out at the end still hold some scent, and the trade calls reusing them pressing — scenting lower-grade tea with them is legitimate recycling. Mixing dried flowers straight into the leaf to make the pack look generous is a different matter, and the test has already been given: if flower residue is clearly heavy, compare it against the GB/T 22292 ceiling.

Reading the rounds: three is where value turns for a tea base

The number of rounds is how many times the cycle above was repeated. It maps directly onto real cost, which is also why it is the number most often inflated.

Rounds and flower charges in the geographical-indication table

There is a published table that matches. The production specification for Hengxian jasmine tea, a geographical-indication product, gives rounds and flower charges by grade in its appendix, in kg of net flower per 100 kg of tea base:

Note: the specification states that net flower quantities may be adjusted for season and flower quality. The table is included to show the scale relationship between rounds and flower charge.

With that table in front of you, most arguments settle themselves. Two rounds to three takes the flower charge from 70 to 100, close to a 50% increase; three to four takes it from 100 to 120. The money spent on flowers is real money.

When extra rounds are money thrown away

Two rounds to three is a change in kind. At two the aroma tends to float — you smell it, you do not taste it. From three it starts to sit in the liquor, which the trade calls aroma falling into the water. That difference survives the milk.

Above three, what you are buying is refinement and layering. Those are worth money in a cup of plain tea, but in a milk tea the fat and protein of the dairy flatten them, and in a fruit tea the fruit acid covers part of them. The extra flower charge is money your customer cannot taste.

So the judgement is plain: for a tea base, three rounds is the turning point. The jasmine green tea we supply runs three rounds plus top-scenting, not because we cannot go higher but because in this application the customer cannot pay for what those extra rounds add. Buyers making plain tea I point upwards. Saying that plainly is worth more than any vague claim of "multiple rounds".

The base leaf: the variable more often overlooked than the rounds

New buyers watch the rounds almost exclusively, yet what sets the floor for a jasmine green tea is usually the leaf before scenting ever begins.

Basket-fired or pan-fired

GB/T 22292-2017 carries two sets of sensory requirements, one for basket-fired (烘青) jasmine tea and one for pan-fired (炒青), with different aroma and taste descriptors. Basket-fired green tea is the mainstream base because it absorbs well and takes the flower aroma in; pan-fired leaf has a high aroma of its own and leaves less room for the flower, and its structure after pan work absorbs less. Where the jasmine note has to register in a drink, basket-fired is the safer choice.

Moisture and re-firing

The base is re-fired before scenting to bring it to a state where it will absorb. Published sources commonly give a range around 4.0%–5.0% moisture, after which the leaf must be spread and cooled before it meets the flowers. Moisture then edges up with each round and each re-fire, and GB/T 22292-2017 caps finished moisture at 8.5%.

New buyers tend to skip over moisture, but it is a very concrete number. High moisture means you paid for water, and it also means the tea keeps less well and its aroma fades faster. Writing a moisture ceiling into the specification does more for you than two more questions about rounds.

A seven-step routine for new buyers

• Step 1. Read the standard on the pack. GB/T 22292 means jasmine tea; GH/T 1247 means flavored tea. They are not the same thing.
• Step 2. Read the ingredient list against the standard: scented tea lists only green tea base and jasmine flowers; flavoured tea also lists edible flavouring. Neither is wrong — the label just has to match what you were sold and what your menu needs.
• Step 3. Ask for the number of rounds and the flower charge, and require both in the contract. Anyone who will only say "multiple rounds" or "traditional process" does not want you checking.
• Step 4. Look at the dry leaf: smell the flower, never see it. If residue is clearly heavy, compare it against the national ceiling.
• Step 5. Take a small pinch, warm it in your hands and smell. A clean, fresh floral note is right; dull sweetness or a scent that hits hard is not.
• Step 6. Run a three-brew test. The first brew tells you whether the aroma arrives, the third whether it is still there. Flavoured tea usually gives itself away at the third.
• Step 7. Ask for a retained sample and third-party test reports, with coverage confirmed item by item for the products you buy and the market you sell into.

Six traps

• Taking "strong aroma" to mean good quality. A dry leaf that hits you in the face is usually flavouring; scented tea is restrained and opens with heat.
• Assuming more flowers means better. It is the reverse — residue above the national ceiling is out of specification.
• Rejecting blending on reflex. A supplier of agricultural product who does not blend cannot promise batch consistency.
• Being fobbed off with "traditional process" and "ancient method". Those words replace no parameter; ask temperature, duration and flower charge.
• Watching rounds and ignoring the base leaf. The base sets the floor, the rounds set the ceiling.
• Ordering in volume straight after a good sample. Without a retained and sealed sample there is nothing to argue from three months later.

FAQ

Q1: Are more scenting rounds always better? No. More rounds means more flowers and more labour, and the price follows. For plain tea it is worth going up; for milk tea and fruit tea bases, dairy and fruit acid flatten anything above three rounds, so three is the better value. Fix the application first, then the rounds.

Q2: How do I tell whether it is flavoured? Two hard checks: does the ingredient list carry food flavouring, and does the standard read GB/T 22292 or GH/T 1247. Add one sensory check, the three-brew test — flavoured tea usually hits hard on the first brew, is gone by the third, and turns dull when cold.

Q3: Why does my jasmine green tea disappear once milk goes in? Three common causes: the aroma lacks penetration for dairy, the tea-to-water ratio is too low, or the brew is too hot or too long so bitterness masks the aroma. The first two are solved by changing material, the third by changing practice.

Q4: Does basket-fired versus pan-fired base really matter in a drink? It does. Basket-fired absorbs well and is the mainstream base for jasmine tea; pan-fired carries its own aroma but leaves less room for the flower. Where the jasmine note has to register, basket-fired is the safer pick.

Q5: For an import order, which items should be nailed down on the specification? The applicable standard, number of rounds, flower charge, base type, moisture ceiling, jasmine flower residue ceiling, whether the blend formula is fixed, and the coverage of the retained sample and third-party test reports. Those eight settle most disputes before they start.

Q6: Are scented tea and flavored tea treated the same at import? No — they sit under different standards, though classification and labelling depend on the destination market's rules. Write the standard number into the contract before buying and ask for the documents your market requires, confirming coverage item by item.

Sources

• GB/T 22292—2017 Jasmine Tea — sensory grade requirements; physicochemical limits (moisture ≤8.5%, total ash, water extract, powder, jasmine flower residue ≤1.0% / ≤1.5%)
• GB 2760, National Food Safety Standard — Food Additives — list of foods to which flavourings may not be added (category 16.02.01, tea and coffee)
• GB 31608—2023, National Food Safety Standard — Tea — additive use in production must comply with GB 2760
• GH/T 1247—2019 Flavored Tea — definitions and categories, including perfuming flavored tea
• Production specification for Hengxian jasmine tea (geographical-indication product) — process flow; Appendix B, rounds and flower charges by grade
• China Agriculture Press, Scented Tea Processing / Scented Tea — process steps, pile-turning temperature, re-firing temperature, top-scenting ratio
• Foods (2026), review of milk tea flavour chemistry and processing — extraction temperature, time, tea-to-water and tea-to-milk ratios by base

Process parameters quoted above (temperature, duration, flower charge, moisture) are drawn from the published standards and trade sources listed and represent common ranges in the trade, included to show the scale of each process. They are not measured values for any single product. The governing specification is the test report and contract annex for the batch in question.