MATSUAn iced matcha latte is one of the most photographed drinks a café can put on the board, and one of the easiest to get wrong at the powder level. The failure is public: a barista tips matcha onto ice, it seizes into beads, and by the time the drink reaches the table the green has drifted grey with grit at the bottom of a clear glass. A powder that whisks beautifully at 80°C can betray you the moment it goes over ice — which is exactly why picking for cold is a different decision from picking for hot.
This guide covers matcha for iced latte service from the supplier side — why cold is the harder test, what makes an iced matcha latte stay green and smooth in the glass, which grade a cold rail needs, what it costs per drink, and how to test a cold matcha for cafes programme before committing a menu line. The numbers below are the ones we work to producer-direct from Uji, Kagoshima, and Izumo, not market averages pulled from a search result.
Why is matcha for iced lattes harder than hot?
The instinct is to treat an iced matcha latte as a hot one poured over ice. It is not, and the reason is physics. Hot water wets and disperses matcha fast, so the fine particles suspend almost on contact — heat does half the barista's work. Cold water wets the powder slowly, so matcha dropped straight into cold liquid beads up, clumps, and sinks rather than suspends. Then the drink stands over melting ice, and the colour has to survive both the milk and that dilution while a customer lines up a photo through a clear glass.
So a cold latte asks three things of the powder that a hot one never tests as hard:
- Cold solubility. The particle has to be milled fine enough to wet and disperse in cold liquid, not just hot. A coarser powder that passes for a hot latte clumps on ice.
- Colour that survives dilution. A vivid shade-grown green has to stay green after it is cut with cold milk and thinned by melting ice — the exact point where a weaker lot turns khaki, and where it shows, because an iced drink is served in glass, not an opaque cup.
- Suspension over time. An iced drink sits. A grade that holds in suspension keeps the last sip looking like the first; a coarse one settles into sludge while the customer is still framing the shot.
None of this makes iced matcha a drink to avoid — it is one of the fastest-growing things a café can run. It means the powder and the preparation both have to be built for cold, and hot performance alone will not tell you which lots are.
What matcha is best for an iced latte?
The best matcha for an iced latte is not the dearest one — it is a finely milled, vivid shade-grown latte grade chosen for how it behaves in cold milk and how its colour reads through a glass of ice. The common mistake is reaching for a ceremonial-tier grade because it sounds like the highest quality. On a cold rail that is money spent on attributes the drink never uses: a whisked-bowl grade is tuned for a delicate flavour served alone, not for cutting through cold milk and dilution.
Three properties decide whether a matcha earns a permanent spot on a cold rail — the things a barista sees in the glass and a buyer sees on the invoice.
Fine mill for clean cold dispersion
Our café grades are milled fine enough to wet and suspend in cold liquid, not only hot. Shaken into a concentrate, the powder disperses in seconds — no beads clinging to the shaker, no grit settling out — behaviour a coarser powder cannot deliver over ice, and no extra sieving step on a busy bar.
Vivid colour that reads through milk and ice
The green comes from shade-grown leaf; shading the plant for the final two to three weeks before harvest pushes chlorophyll up and drives a colour that survives being poured over ice and cut with cold milk. Kagoshima grades in particular read bright and clean through a clear glass, which is where a cold drink lives. On a cold build, dilution works against you, and that colour reserve is the difference between a photo worth posting and a muddy glass.
Lot-to-lot consistency across a season
Because we buy the same cultivars from the same fields season after season rather than chasing spot lots, a café can hold one profile all summer. A $6 drink cannot shift colour or astringency between deliveries, so the June lot and the August lot are matched to shake the same green iced latte, and a grade can be reserved for your account rather than dissolving into a distributor's blend.
Why does cold matcha clump or settle — and how do you stop it?
Matcha clumps in cold liquid for two reasons that compound: the powder is coarser or older than it should be, and it was added straight to a cold, dilute drink instead of being dispersed first. Fix both and the problem largely disappears.
Start with a fine, fresh lot
Particle size and freshness do most of the work. A finely, recently milled lot wets and suspends far more readily in cold water than a coarse or aged one, which beads up and drops to the bottom. Colour and dispersion both worsen as a lot ages, so a bag open for months clumps more than a fresh one even at the same grind — one place a producer-direct fresh lot pays off in the glass, not just on the palate.
Make a concentrate first, then dilute over ice
Never drop dry powder straight onto ice. Disperse the matcha into a little cool liquid first — shake 2 g with a splash of cool water, or blend it briefly — until smooth and lump-free. Then pour over ice and top with cold milk. The concentrate step gives the powder a chance to wet and suspend before the cold and dilution work against it, and standardising this one move eliminates most clumping complaints regardless of who is on the bar.
Which MATSU grades fit a cold latte rail?
We do not sort matcha into the ceremonial-versus-culinary binary, because that split tells you nothing about how a powder behaves over ice. We map it on three axes instead — application, price band, and lot consistency — across our eight-grade architecture. For a cold rail the right grade is almost always a standard or classic latte grade, not the most expensive line on the list. Here is how the grades a café actually uses map against the cold drinks a café actually runs; full pricing for all eight grades sits on the grade and pricing page.
| Cold-drink application | What the powder has to do | Grade band | Indicative price |
|---|---|---|---|
| Iced matcha latte rail (the volume driver) | Disperse cold with no clumps, read green through milk and ice, low cost per cup | Standard / Classic | $390–$450/kg ($39–$45 / 100 g) |
| Signature / photographed cold drink | Vivid colour on camera through dilution, rounded finish, stable all summer | Premium / Signature | $530–$810/kg ($53–$81 / 100 g) |
| Matcha soda / sparkling & cold sweets | Hold colour and body in a very dilute or carbonated build | Premium latte grade | $450–$650/kg ($45–$65 / 100 g) |
| Cold usucha over ice / tasting flight | Origin character as the product, whisked cold and served alone | Reserve / Signature | $810–$1,050/kg ($81–$105 / 100 g) |
The four grades a cold rail draws on most: Kagoshima Standard ($390/kg) and Uji Standard ($420/kg) carry the iced latte volume; Uji Classic ($450/kg) doubles for iced drinks and cold bakes; and Kagoshima Premium ($650/kg) is the signature-drink grade whose vivid green is built to photograph through a glass. The full ladder runs to Izumo Reserve at $1,050/kg for cold usucha and tasting service — all eight grades, with sensory notes, sit in the catalogue.
Most cold rails run one grade, some run two
A café settling an iced programme usually lands on a single workhorse latte grade in the $390–$450/kg band for the bulk of its cold volume — the same grade generally handles hot lattes too, keeping the bar simple. One charging a premium for a signature iced drink adds a higher grade for that single use. Buying one mid-priced grade for everything either over-pays on the iced rail or under-specifies the drink you charge extra for, which is why the grade diagnostic asks about your primary use and volume before returning a shortlist, rather than leaving you to decode a full price list cold.
How much does matcha for iced lattes cost per drink?
MATSU wholesale matcha runs $390 to $1,050 per kilogram FOB Japan — $39 to $105 per 100 g — across eight grades. Where your café lands depends almost entirely on the latte grade you settle on, because the iced rail is where the volume is. An iced matcha latte uses the same ~2 g dose as a hot one, so cost per drink is the same; some cafés push to 2.5–3 g for a bolder build that reads through more ice and milk. Here it is worked through at the standard latte band.
| Grade price | Cost per 100 g | Dose per drink | Matcha cost / drink | Drinks per kg |
|---|---|---|---|---|
| $390/kg | $39 | 2 g | ~$0.78 | ~500 |
| $450/kg | $45 | 2 g | ~$0.90 | ~500 |
| $450/kg | $45 | 3 g (bold iced) | ~$1.35 | ~333 |
| $650/kg | $65 | 2 g | ~$1.30 | ~500 |
At a $6 menu price, a $0.78–$0.90 matcha cost leaves the same order of margin a café expects from a quality iced coffee, before milk and labour. Grade choice matters because of volume: a busy café clearing 30 cold drinks a day moves close to 1.8 kg a month on the iced rail alone, so a $200/kg gap between an over-specified grade and the right one is real money across a summer. Matcha is the cheapest ingredient in the drink and the only one the customer actually sees — which is a reason to spend on colour, not on a tier the cold build never uses.
| Café profile | Cold matcha drinks / day | Approx. kg / month | List spend / month* |
|---|---|---|---|
| New / testing the rail | ~10 | ~0.6 kg | ~$235–$270 |
| Established single site | ~30 | ~1.8 kg | ~$700–$810 |
| Summer peak / viral drink | ~70 | ~4.2 kg | ~$1,640–$1,890 |
| Small group / 2–3 sites | ~150 | ~9 kg | ~$3,510–$4,050 |
*List spend at the $390–$450/kg standard latte band, matcha only, at a 2 g dose, before volume discounts. A single producer-direct order runs up to roughly 30 kg; larger standing programmes are arranged case by case.
How do you build an iced matcha latte that stays green?
The powder is half the drink; the build is the other half. The method below is what we recommend cafés standardise across every barista, so the last drink of a Saturday looks like the first.
- Dose. ~2 g for a standard iced latte, 2.5–3 g for a bold build that reads through more ice and milk.
- Make the concentrate. Shake the matcha with a small splash of cool water until fully smooth and lump-free, or blend briefly — the non-negotiable step for cold.
- Build over ice. Fill the glass with ice, pour the smooth concentrate, then top with cold milk. The layered pour gives the drink its photographed gradient — and a clear glass is where a vivid lot earns its price.
- Sweeten before, not after. Dissolve sweetener into the concentrate or use a liquid syrup — granulated sugar will not dissolve cold and settles like grit, which reads the same as clumping.
- Serve fresh. A batched concentrate held cold and covered works for a few hours during a rush, but the green is freshest made to order.
What minimum order and terms fit a cold rail?
Two numbers decide whether a supplier fits a café building an iced programme: the minimum order, and how far a first order stretches. The terms we work to, producer-direct FOB Japan:
- Sampling. A $129 tasting kit of three flagship grades (3 × 30 g) lets you shake cold lattes against your own milk and ice before any volume order — credited in full to a first order of 1 kg or more.
- Minimum order. 1 kg per grade is the practical entry — roughly two to four weeks of iced-latte volume for a single site, small enough to stay fresh.
- Volume discounts. 5% on 5–9.9 kg; 10% on 10–24.9 kg, the point a Wholesale Partnership adds a six-month price lock; 15% on 25–49.9 kg; 50 kg and above quoted case by case.
- Single-order ceiling. A single producer-direct order runs up to roughly 30 kg; larger standing programmes are scheduled across shipments rather than sold as one drum, so ask rather than assuming a set bulk tier.
Producer-direct means grower-level sourcing through MATSU, without the usual chain of trading houses, importers, and distributors — so the person who graded a cold-service lot is the person who can hold it for your account across a summer, and the July delivery reads the same green as the May one. That answerability is what turns a viral iced drink into a fixed menu line.
How do you test cold matcha before committing?
You do not commit a menu drink to a powder you have only whisked hot in a back room. The cheapest insurance is a tasting kit shaken cold on your own bar, the way you will serve it, before any volume order — it prevents the most common iced-matcha mistake of buying a kilogram on a price and a photo, then discovering it clumps over ice and goes grey in the glass.
Run the kit the way your café works: same milk, same ice, same dose, shaken on the bar during a normal shift. Watch for clean dispersion with no beads clinging to the shaker, colour that stays green through milk and ice, and a finish that stays clean without sugar. That is the grade to put your first wholesale kilogram behind — the producer-direct sourcing check no spec sheet can replace. When you are ready, request the professional catalogue for full specifications and pricing across all eight grades. Producer-direct by express courier, lead time is typically 2–3 weeks, and the kit ships on the same service so you can shake cold lattes within a similar window before placing volume.
Frequently asked questions
What matcha is best for an iced latte at a café?
A finely milled shade-grown latte grade in the $390–$450/kg band, chosen because it disperses cleanly in cold water and reads vivid green through the glass. The two properties that matter most for a cold latte are cold solubility and colour that survives dilution — not the ceremonial tier. The right grade for a cold rail is built for milk and volume, not for a whisked bowl.
Why does my iced matcha latte clump or settle at the bottom?
Cold water does not wet matcha the way hot water does, so a coarse or aged powder clumps on contact and then settles as the drink stands over ice. The fix is a finely milled fresh lot plus making a smooth concentrate first — shake or blend the matcha with a little cool liquid before pouring over ice, rather than dropping powder straight onto cubes.
How do you make an iced matcha latte that stays vivid green?
Start with a vivid shade-grown lot — Kagoshima grades read especially bright through a clear glass — shake ~2 g into a smooth cold concentrate, pour over ice, and top with cold milk. Batching a concentrate for a rush is fine for a few hours if kept cold and covered, but colour is freshest made close to service. The green holds longest when the lot is fresh, milled fine, and kept out of air and light between drinks.
How much matcha goes into a cold latte, and what does it cost per drink?
About 2 g, the same dose as a hot latte. At a standard latte grade of $390–$450/kg, that is roughly $0.78–$0.90 of matcha per drink before milk and labour — around 500 drinks per kilogram. Some cafés push to 2.5–3 g for a bolder iced build that reads through more ice and milk, which lifts cost per cup proportionally.
Does the same matcha work for both hot and iced lattes?
Usually yes. A well-milled shade-grown latte grade that reads green through hot milk generally performs cold too, because fine particle size and vivid colour help in both. The difference is in preparation, not the powder — cold drinks need a smooth concentrate made first. Most cafés run one workhorse grade across hot and iced, which keeps the bar simple and the menu photo consistent.
What is the minimum order for café matcha, and are there volume discounts?
One kilogram per grade is the minimum wholesale order, producer-direct FOB Japan — roughly two to four weeks of iced-latte volume for a single site. Volume discounts begin at 5% on 5–9.9 kg and 10% on 10–24.9 kg, where a Wholesale Partnership adds a six-month price lock; 25–49.9 kg runs 15%, and 50 kg and above is quoted case by case. A single shipment runs up to roughly 30 kg. A $129 tasting kit lets you shake cold lattes first, credited to a first 1 kg order.
How do you test cold matcha before committing to a supplier?
Test it cold, the way you will serve it. Shake each grade with cool water and milk over ice on your own bar — not just whisked hot in a back room. Watch for clean dispersion with no clumps, colour that reads green through milk and ice, and a clean finish without sugar. The $129 MATSU Tasting Kit ships three flagship grades at 3 × 30 g, delivery included — enough for a real week of side-by-side cold trials.
How long does café matcha take to arrive, and where do you ship?
2–3 weeks producer-direct from Japan by express courier, longer for some destinations and customs profiles. MATSU ships to café and hospitality buyers in the United States, the UK, and Europe on an FOB Japan basis, so freight, any import duty or tax, and clearance sit on the buyer side; every shipment travels with a commercial invoice and packing list in English so a broker or courier can process the entry. Any destination-specific food-import requirement is confirmed on the buyer side through your broker.