Recipe
Cà phê sữa đá
Vietnamese iced coffee with condensed milk
Roughly: ka fe SOO-uh DAH
Strong robusta, sweetened condensed milk, ice. The whole drink is built around one problem: how to make coffee this powerful pleasant to drink.
What you need
Equipment
- A phin (120 ml is the standard single-serve size)
- A heatproof glass that the phin sits on without wobbling
- A second tall glass for the ice
- A kettle
- A long spoon
Ingredients
- Dark-roast Vietnamese robusta, ground medium-coarse20 gabout 3 tbsp
Pre-ground Vietnamese coffee is usually already the right grind.
- Water, just off the boil (90–96 °C)100 mlabout 7 tbsp
- Sweetened condensed milk30 ml2 tbsp
Start here. Vietnamese cafés often use more; you can always add.
- Icea full glass
Roughly 160 ml of coffee needs a 300 ml glass packed with cubes.
Method
- 1
Milk in the glass first
Spoon the condensed milk into the bottom of the heatproof glass. It goes in before the coffee, not after — the hot coffee dripping onto it starts dissolving it, which is the only thing that makes it stir in easily later.
Look for: A thick pale layer about 1 cm deep.
- 2
Load the phin
Set the phin on the glass. Add the coffee to the chamber and shake it flat — do not tamp it. Lower the press plate on top and turn it down until it just touches the bed. Finger-tight, then stop.
Look for: The bed is level and the press sits flat, not tilted.
- 3
Bloom
Pour about 20 ml of hot water over the grounds — just enough to wet them. Wait 30–45 seconds. The bed will swell and push up against the press, which is what seals it and slows everything that follows.
Look for: The grounds dome up slightly and smell sharply of coffee.
- 4
The main pour
Fill the chamber with the remaining 80 ml, put the lid on, and leave it alone. Do not stir it, do not press it down, do not lift the lid to check.
Look for: A steady drip you can count — roughly one drop a second, slowing as it goes.
- 5
Wait 4 to 6 minutes
When the drip becomes occasional rather than steady, it is done. Lift the phin off and rest it on the inverted lid so it does not drip on the table.
Look for: About 80–90 ml of very dark coffee sitting on the milk.
- 6
Stir
Stir hard until the colour is completely even — no pale streaks at the bottom. This takes longer than you expect, maybe 20 seconds.
Look for: A uniform caramel brown, the colour of milky toffee.
- 7
Over ice
Pour into a tall glass packed with ice. Pour it over the ice, not onto a bare glass — the dilution as it chills is part of the drink, not a flaw in it.
Look for: The glass frosts almost immediately.
If it goes wrong
| What happened | Why | What to change |
|---|---|---|
| The water ran straight through in under two minutes. | Grind too coarse, press too loose, or not enough coffee for the chamber. | Add 2–3 g more coffee, turn the press down a little further, or grind one step finer. Change one thing at a time. |
| Nothing came out, or it took fifteen minutes. | Grind too fine, or the press screwed down hard. | Back the press off until it is barely touching. If it still stalls, the grind is espresso-fine — go coarser. |
| It tastes thin and sour. | Under-extracted — usually a fast drip. | Slow the drip down (see above). A phin that finishes in two minutes has not brewed, it has rinsed. |
| It tastes harsh and ashy, not just bitter. | Over-extraction, or a very dark roast pushed too far. | Speed the drip up slightly, or drop the water to 90 °C. Some traditional Vietnamese roasts are genuinely scorched — try a different bag. |
| The milk sits in a stubborn layer at the bottom. | The coffee cooled before you stirred it. | Stir while it is still hot. Cold condensed milk is close to solid. |
The short version
Twenty grams of dark robusta, a hundred millilitres of hot water, two tablespoons of condensed milk in the glass before you start, and four to six minutes of doing nothing. Stir hard, pour over ice.
That is the whole drink. Everything below is about why each of those numbers is what it is, and what to change when it goes wrong.
Why the coffee is this strong
A phin brewed at 1:5 produces something closer to a long espresso than to filter coffee. If you tasted it on its own you would probably not enjoy it — it is thick, deeply bitter, and almost syrupy.
That is deliberate. The coffee has two jobs ahead of it. First it has to hold its own against sweetened condensed milk, which is about 54% sugar by weight and coats the tongue. Then it has to survive a glass of ice melting into it. Brew it at a normal filter strength and by the time you reach the bottom of the glass you are drinking sweet water.
Robusta helps here in a way arabica cannot. It brings more body, more bitterness and roughly twice the caffeine, and it holds up under dairy. This is the clearest case in coffee where robusta is not a cheaper substitute for arabica — it is the right bean for the job.
On the milk
Sweetened condensed milk is in this drink for a historical reason, not a culinary one. Fresh milk was difficult to keep in tropical Vietnam before widespread refrigeration; condensed milk came in a tin, kept for months, and happened to be a very good match for bitter coffee.
It stayed after refrigeration arrived, which tells you it earned its place. The thickness matters as much as the sweetness — it gives the finished drink a weight that sugar and fresh milk together do not replicate.
Vietnamese brands tend to be thicker and sweeter than most Western ones. If yours is thin, use a little less water or a little more milk.
Sữa đá, sữa nóng, đen đá: naming the variations
The names are compositional, which makes them easy once you see the pattern:
- cà phê — coffee
- sữa — milk (meaning condensed milk, unless stated otherwise)
- đen — black
- đá — ice
- nóng — hot
So cà phê sữa đá is coffee + milk + ice. Cà phê sữa nóng is the same drink hot. Cà phê đen đá is black iced coffee, no milk. Order any of them by name in Vietnam and you will get exactly what you asked for.
Getting the drip right
Almost every problem with this drink is a drip-speed problem, and there are only three levers: grind, dose and press pressure.
A drip that finishes in under two minutes has not extracted properly — you will taste it as thin and sour. A drip that takes more than about eight minutes has gone too far the other way, and turns harsh. Four to six minutes is the window most Vietnamese cafés aim for.
The press is the lever people forget. It is not a tamper. Its job is to sit on the bed and provide gentle, even resistance, and turning it down hard is the single most common way to stall a phin completely.
Substitutions
| Instead of | Use | What changes |
|---|---|---|
| Vietnamese robusta | Any dark-roast coffee | It will work, but lose the heavy body robusta gives. Arabica in particular gets buried under the milk. |
| A phin | A Moka pot or a double espresso | The closest match by strength. Use about 60 ml of espresso and cut the milk to 20 ml. |
| Condensed milk | Evaporated milk plus sugar, or oat condensed milk | Evaporated milk is thinner and needs about 2 tsp of sugar per serve. Oat versions work well and are widely sold in Vietnam now. |
Questions people ask
- What is the correct coffee to water ratio for Vietnamese iced coffee?
- About 1:5 — 20 g of coffee to 100 ml of water. That is much stronger than a pour-over, because the drink is designed to be cut with condensed milk and then diluted again by ice.
- Can I make Vietnamese iced coffee without a phin?
- Yes. A Moka pot or a double espresso gets you close on strength. A drip machine or French press will not — they produce coffee too weak to survive the milk and the ice.
- How much condensed milk should I use?
- Start at 2 tablespoons for a 20 g dose and adjust. Vietnamese cafés vary enormously, and the south generally sweetens more than the north.
- Is Vietnamese iced coffee stronger than normal coffee?
- Considerably, and for two reasons that compound. A phin brews at about 1:5 against a pour-over's 1:16, and robusta carries roughly twice arabica's caffeine. One glass is estimated at 350–450 mg of caffeine against 95–165 mg for a typical cup of filter coffee.
Sources
Figures on this page come from the following. Where a claim is an estimate or a common description rather than a measurement, the text says so.
- Coffee Annual — Vietnam (GAIN report VM2026-0016)USDA Foreign Agricultural Service · accessed 2026-09-11Robusta's dominance in Vietnamese production, which is why dark robusta is the default bean for this drink.
