How to Make Cà Phê Sữa Đá (Vietnamese Iced Coffee with a Phin)
Cà phê sữa đá is Vietnam's iced coffee: dark robusta dripped through a small metal phin straight onto sweetened condensed milk, then poured over ice. One glass takes 20 g of coffee, 20 g of condensed milk and 90 ml of water at about 95 °C. The drip runs for roughly five minutes, and that patience is what gives the cup its body.
- For 1 glass: 20 g coffee, 20 g sweetened condensed milk, 90 ml water at about 95 °C
- Bloom for 40 seconds with 30 ml, then add 60 ml: the drip takes about 5 minutes
- Coffee: robusta, medium to medium-fine, about the texture of sand
- Press the insert only lightly: a tight press blocks the flow
- Total time: about 12 minutes, 5 of them hands-on
What is a phin, and what makes this drink different?
A phin is a small single-cup filter that sits right on top of your glass. It has four parts: a saucer to catch drips, a perforated chamber that holds the coffee, an insert (or screw press) that flattens the grounds, and a lid to keep the heat in. Aluminium is the traditional material, light and cheap; stainless steel is tougher and tends to have cleaner, more even holes; ceramic holds heat well but can chip.
There is no paper and no pressure. Water works its way through the grounds by gravity, which gives a dense, almost syrupy cup. It is the opposite of a quick extraction, and the slowness is the point.
The beans have their own story. French missionaries brought coffee to Vietnam in 1857 and the first plantations followed in 1888. Today the country is the world's second-largest producer after Brazil, with robusta making up about 97% of its crop, grown mostly in the Central Highlands around Đắk Lắk province. Sweetened condensed milk took over from fresh milk because fresh milk was scarce and spoiled fast in the tropical heat, and the bitterness of a dark robusta suits its sweetness. Ice came with the climate. The name is a plain description: cà phê (coffee), sữa (milk), đá (ice).
What do you need for one glass of cà phê sữa đá?
These quantities make one glass in a standard phin. Published recipes range widely, from 14 g to 30 g of coffee depending on phin size and taste, so treat the figures as a starting point to tune.
- 20 g robusta coffee, ground medium to medium-fine, like sand
- 20 g sweetened condensed milk, or up to 2 tablespoons if you like it sweet
- 90 ml water at about 95 °C: 30 ml to bloom, 60 ml after
- Ice, and plenty of it: large cubes melt more slowly and water the drink down less
You will also want a phin with its saucer, a heatproof glass to brew into, a tall serving glass and a kettle. A thermometer helps, but water just off the boil and left for a few seconds is close enough: published targets run from 90 to 96 °C.
As for the coffee itself, pick a robusta or a Vietnamese blend with a dark roast. Chicory belongs to New Orleans blends such as Café du Monde, which give a different profile; they work as a stand-in outside Vietnam but are not the original recipe. Read the label so you know what is in your bag.
How do you make cà phê sữa đá, step by step?
Two things decide the result: a grind that lets the water through and a light touch on the insert. Keep a timer handy.
- Weigh and settle the coffee. Put 20 g of medium to medium-fine ground coffee, about the texture of sand, into the phin chamber. Drop the insert on top and press only lightly, because a tight bed chokes the flow.
- Start with the condensed milk. Spoon 20 g of sweetened condensed milk into a heatproof glass and set the phin on top. For a sweeter cup, go up to two tablespoons.
- Bloom the grounds. Pour 30 ml of water at about 95 °C, just enough to wet all the coffee. Leave it for 40 seconds while the grounds swell and release gas.
- Add the rest of the water. Pour in another 60 ml, put the lid on to hold the heat, and let gravity do the work.
- Wait for the drip. Allow about 5 minutes, until the last drops fall. The coffee should fall drop by drop rather than run in a stream.
- Stir it through. Lift the phin away and stir the coffee and condensed milk until the colour is even, a creamy mid-brown.
- Pour over ice. Fill a tall glass with large ice cubes, pour the coffee over, stir for ten seconds to chill it, and drink straight away.
How do you tune the flavour, and what else can you try?
The phin is forgiving but not magic. Grounds that are too fine over-extract and can drip for ten minutes, leaving the cup harsh; grounds that are too coarse run through in half a minute and taste thin. If your drip falls outside the four to eight minutes that published recipes describe, change the grind before anything else.
For sweetness, 20 g of condensed milk gives a balanced glass. Go to two tablespoons for something close to dessert, or cut back if your robusta already tastes round. A bạc xỉu flips the proportions, with plenty of condensed milk and only a little coffee for a softer, milkier drink.
Without ice, the same coffee is simply cà phê sữa nóng. If you enjoy richer Vietnamese drinks, our egg coffee guide is the natural next step, and the page on Vietnamese coffee covers where the beans come from.
- Pressing the insert hard. It blocks the flow.
- Skipping the bloom. Without the 40 seconds, extraction tends to be uneven.
- Water outside the range. Aim for 90 to 96 °C, as published recipes suggest.
- Small ice cubes. They melt quickly and thin out the sweetness.
- Unstirred condensed milk. It stays at the bottom of the glass unless you stir thoroughly.
Frequently asked questions about cà phê sữa đá
Do I need a phin to make cà phê sữa đá?
No, though the phin gives the most faithful result. A double espresso or a tight double ristretto, stirred into the condensed milk and poured over ice, gets you close. The drink will taste a little thinner, because the phin drips slowly and builds a denser cup.
Why does Vietnamese iced coffee use robusta?
Because it is the national crop: robusta makes up roughly 97% of Vietnam's output. A dark-roasted robusta is bitter enough to stand up to the condensed milk, where a delicate arabica would vanish under the sugar. It also carries around twice the caffeine of arabica.
How is it different from Vietnamese egg coffee?
Cà phê sữa đá is filtered coffee over condensed milk and served on ice. Egg coffee (cà phê trứng) is a hot drink topped with a whipped egg yolk and sugar cream. Both lean on strong coffee, but they are very different experiences.
My phin drips too fast or too slowly. What do I change?
Too fast usually means the grind is too coarse or the bed too loose; too slow means the grind is too fine or the insert was screwed down hard. Change the grind by one step and try again, aiming for roughly five minutes.
Sources
Historical facts, proportions and phin settings checked against the following sources (accessed 5 October 2026):
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