Here is how to make matcha cold foam: sift a little culinary matcha, whisk it into a smooth paste with a splash of cold milk (or a spoon of syrup), pour in the rest of the cold milk - or a milk-and-cream mix - add a touch of sweetener, then froth for 20 to 40 seconds until it turns pale green, thick and glossy enough to mound on top of a cold drink and slowly sink into it. That is the whole trick, and the sections below cover the details that make it foolproof.
Matcha cold foam is one of the prettiest cafe-style toppings you can build at home, and it needs no espresso machine, no steam and no special barista kit. If you can whisk, shake a jar or run a handheld frother, you can crown any iced coffee, cold brew or iced latte with a green cloud of it.
What matcha cold foam is (and how it differs)
Matcha cold foam is cold milk that has been frothed with sifted matcha until it turns light, airy and pale green, then floated on top of a cold drink. It is a topping, not a drink on its own. Two contrasts make it click:
- It is not a hot matcha latte. A matcha latte is matcha whisked with hot water and warm milk, served as a full drink and stirred together. Matcha cold foam is frothed cold, kept thick, and sits on the surface of another drink rather than becoming the drink.
- It is plain cold foam plus matcha. The base technique is the same aerated-cold-milk topping you would make for any iced coffee. For the base method and the milk-and-tool basics, see how to make cold foam and, for the definition, what cold foam is. This page layers matcha onto that foundation.
Because it is frothed cold and never heated, it holds its structure long enough to mound on the drink and then slowly sink through as you sip. If you are weighing it against a dairy-whipped topping, our note on cold foam versus whipped cream explains why cold foam pours while whipped cream stays stiff.
The key step: sift and pre-mix the matcha
The single thing that separates smooth matcha cold foam from a speckled, clumpy one is this: sift the matcha and turn it into a smooth paste before it ever meets the full amount of milk. Matcha is a very fine powder that loves to clump, and those clumps will not dissolve once they are floating in cold milk.
- Sift. Push the matcha through a small fine-mesh strainer to break up any lumps. Even a quarter teaspoon benefits from this.
- Make a paste. Whisk the sifted matcha with just a splash of the cold milk, or with a spoon of simple syrup, until it is a smooth, lump-free slurry. A small bamboo whisk (chasen), a mini spring whisk, or the frother itself all work.
- Then add the rest. Only once it is smooth do you pour in the remaining cold milk and froth.
Skip the sift-and-paste step and you will chase little green flecks around the glass for the rest of the drink.
Ingredients and amounts
This makes enough matcha cream cold foam to top one tall iced drink. Scale it up as needed.
- Cold milk, about 1/4 cup (60 ml). Straight from the fridge. Whole, 2%, nonfat, or a barista-formula oat or soy milk all work, with different results (see the ratios note below).
- A splash of cream (optional), up to 1 tablespoon (15 ml). Swapping a little of the milk for heavy cream gives a richer matcha cream cold foam that holds its shape longer.
- Sifted culinary matcha, about 1/2 to 1 teaspoon. Culinary grade is ideal here; its stronger, slightly bolder flavor cuts through milk and sweetener better than delicate ceremonial grade.
- Sweetener, 1 to 2 teaspoons. Simple syrup blends most smoothly; sugar, honey, or a spoon of sweetened condensed milk all work too. Condensed milk adds body as well as sweetness.
- Vanilla (optional), a few drops. Rounds out matcha's grassy edge.
Tools, technique and texture
Any tool that whips air into cold milk will make matcha cold foam. Here is how the common choices behave, from fastest to gentlest.
| Tool | Technique | Texture |
|---|---|---|
| Handheld (battery) frother | Hold near the surface, buzz 20 to 40 seconds | Fast, airy, light foam; the easiest tool |
| Small whisk or bamboo chasen | Whisk briskly in an M or W motion | Smooth and controlled; best for the paste step |
| French press | Pump the plunger up and down 20 to 30 times | Dense, even foam; good for bigger batches |
| Sealed jar (shake) | Shake hard for 30 to 60 seconds | Soft, creamy foam; gentlest and hard to over-whip |
How to make matcha cold foam, step by step
Once the paste is smooth, the rest takes under a minute. This is the core matcha cold foam recipe for one drink.
- Sift the matcha. Pass 1/2 to 1 teaspoon of matcha through a fine strainer into your frothing cup or jar.
- Whisk it smooth. Add a splash of the cold milk or a teaspoon of syrup and whisk into a smooth, lump-free paste.
- Add the rest of the cold milk. Pour in the remaining milk (and the splash of cream, if using), plus the sweetener and any vanilla.
- Froth cold, 20 to 40 seconds. Whip with your chosen tool until it thickens, lightens to pale green and turns glossy. Stop while it is still pourable and holds a soft peak; if it looks clumpy or starts to separate, you have gone too far.
- Spoon or pour it over. Float it on top of your iced drink so it mounds, then slowly sinks. Sip through the foam, or stir it in.
Ratios for a thicker or lighter foam
The texture is all in the milk you choose and how much you froth:
- Thicker, longer-holding foam: lean on protein and a little fat. Use nonfat milk for stiffness, or swap up to a third of the milk for heavy cream. This is the matcha cream cold foam route, and it mounds highest.
- Lighter, airier foam: use 2% or a barista oat milk and froth a touch less. Lower-fat milks froth lighter and looser, so they sink into the drink a little faster, which is lovely if you want the matcha to marble down through the glass.
- The rule of thumb: more fat and protein means a foam that holds; less fat means a foam that melts in prettily. A touch of cream is the easiest way to make any version stand up.
What to put matcha foam on
Matcha foam for iced coffee is the classic pairing; the roasty coffee and grassy matcha play off each other beautifully. Try it:
- Over cold brew, where the smooth, low-acid coffee lets the matcha come through.
- On a vanilla iced coffee, so the vanilla bridges the coffee and the matcha.
- Crowning an iced latte, for a two-tone green-and-white drink.
- On its own over iced milk, for a matcha-on-matcha cloud with no coffee at all.
You can also flavor the foam itself. A caramel spin is a favorite: our salted caramel cold foam method swaps in caramel syrup and a pinch of salt, and you can whisk a little sifted matcha into that for a salted-caramel-matcha hybrid.
A light note on caffeine
Matcha contains caffeine; it is powdered green tea leaf, after all, so a matcha-topped drink adds a little more on top of whatever is underneath. If your base is coffee or cold brew, you are stacking two caffeinated things, so treat the whole drink as a caffeinated one and go easy on it late in the day if caffeine tends to keep you up. How much you feel it depends on how much matcha you use and how sensitive you are; responses vary, and this is not medical advice.
That is all there is to it: sift, make a smooth paste, froth cold, and pour. Nail the paste step and pick the milk that gives you the texture you want, and every iced coffee, cold brew or iced latte gets a pale-green, cafe-worthy crown, no machine required.