Dalgona coffee is instant coffee, sugar and just-boiled water whipped into a thick, pale, glossy foam, then spooned over a tall glass of hot or iced milk. It is the fluffy "whipped coffee" cloud that went viral in 2020, also called foam coffee, and it needs no machine, no espresso and no special skill. The single trick that makes it work: you must use instant coffee. Here is exactly how to make dalgona coffee at home, with the ratio, the steps and the fixes for stiff peaks.
What is dalgona coffee?
Dalgona coffee is a whipped, two-layer drink: a dense caramel-coloured coffee foam floating on cold or warm milk. You whisk equal parts instant coffee, granulated sugar and hot water until the mixture turns from dark and runny to light, airy and stiff enough to hold its shape. Stir the two layers together just before you drink and you get a sweet, creamy, lightly bittersweet coffee.
The drink is Korean by name. It exploded across social media in early 2020 during lockdowns, when a simple whisk-it-yourself recipe was perfect for home. The name comes from dalgona, a spongy Korean honeycomb-toffee candy the foam was said to resemble in colour and sweetness. If you want the background on the powder that makes it possible, see our guide to what instant coffee is.
What you need
One serving is built on a 1:1:1 ratio. Two tablespoons of each gives a generous topping for one large glass.
- 2 tbsp instant coffee — freeze-dried granules or spray-dried powder both work. This is non-negotiable (more on why below).
- 2 tbsp granulated sugar — white sugar is structural, not just sweetener. It helps the foam set and hold.
- 2 tbsp hot, just-boiled water — hot water dissolves the coffee and sugar into a thick, saturated base.
- 1 glass of milk — dairy or any plant milk, plus ice for an iced version.
- A whisk and muscle, an electric hand mixer, a stand mixer, a milk frother, or a lidded jar — anything that beats air in fast.
How to make dalgona coffee
- Combine the three equal parts. Add the instant coffee, sugar and hot water to a deep bowl or large mug. Keep the ratio exact — equal parts is what lets it whip.
- Whip until it holds peaks. Beat on high until the mixture pales to a light caramel colour, thickens, and stands in soft-to-stiff peaks. With an electric mixer this takes 2 to 4 minutes; by hand with a whisk, expect 5 to 10 minutes of steady work. It is ready when you lift the beater and the foam holds a peak that barely flops.
- Fill a glass with milk. For iced dalgona, add ice and cold milk. For a hot version, use warm or steamed milk.
- Spoon the foam on top. Gently dollop the whipped coffee over the milk so it sits as a distinct cloud.
- Stir before drinking. Photograph the layers if you like, then fold the foam through the milk so every sip is balanced. Undisturbed, the foam stays put for a while; the sugar is part of why it holds.
Dalgona coffee ratio and method at a glance
| Element | Amount / setting | Why it matters |
|---|---|---|
| Instant coffee | 2 tbsp (1 part) | Provides the solids that trap air and build foam |
| Sugar | 2 tbsp (1 part) | Structural; stabilises and stiffens the foam (less sugar = softer cloud) |
| Hot water | 2 tbsp (1 part) | Dissolves coffee and sugar into a thick base to aerate |
| Electric hand / stand mixer | High speed, 2 to 4 min | Fastest route to stiff peaks; saves your arm |
| Milk frother (handheld) | 3 to 5 min, small batch | Works for one serving; whisk in a narrow cup |
| Whisk by hand | 5 to 10 min | Works fine; just slower and more effort |
| Lidded jar (shake) | 4 to 6 min of shaking | No-tool option; tire-your-arm method |
Why dalgona coffee must use instant coffee
This is the make-or-break rule. Instant coffee is already brewed, then dried into granules, so it carries dissolved coffee solids and surfactants — compounds that lower surface tension and let air bubbles form and hold. Add sugar for structure and hot water to activate it, and a quick beating turns the mix into a stable foam. Brewed coffee, espresso, moka-pot or pour-over coffee will not whip, because the liquid lacks those concentrated, ready-to-aerate solids. If all you have is a bag of beans, that is a different drink — see how to make coffee the standard way instead.
Tips for a better whipped coffee foam
- Keep the 1:1:1 ratio exact. Equal parts is what whips reliably; too much water goes soupy and too little sugar deflates. Scale up evenly for more servings.
- Use an electric beater if you can. It reaches stiff peaks in a fraction of the time and with none of the arm ache.
- Do not skip the sugar entirely. Sugar is structural, so cutting it makes a softer, looser foam that collapses faster. Halve it for a less-sweet cloud, but expect a more delicate texture.
- Use a deep, narrow bowl. It keeps the small amount of mix in the path of the beaters so air gets in faster.
- Any milk works. Whole milk is rich; oat and other barista plant milks pour well and froth nicely under the foam.
Variations to try
- Iced dalgona. The classic: cold milk over ice with the foam on top. Refreshing and the most photogenic.
- Hot dalgona. Spoon the whipped coffee over warm or steamed milk for a cosy version, where the foam slowly melts into the cup. For more chilled ideas, see what cold coffee is and its variations.
- Matcha "dalgona." Whisk matcha into the milk layer, or top with the coffee foam, for a green-and-cream contrast.
- Cocoa or chocolate. Add a spoon of cocoa powder to the whip, or dust the finished cloud, for a mocha-leaning cup.
- Decaf dalgona. Use instant decaf and it whips the same way. Note that decaf is low-caffeine, not caffeine-free — a small trace remains.
Is dalgona coffee strong?
It is regular coffee, so it carries normal caffeine. A two-tablespoon scoop of instant coffee is a fair amount of coffee solids, so a full serving can be on the stronger side — adjust the foam-to-milk balance to taste, and go lighter in the evening if caffeine keeps you up. It is also sweet by design, since the sugar is doing structural work in the foam.
That is the whole recipe: three equal spoons, a few minutes of whipping, and a glass of milk. Dalgona coffee is the rare viral drink that genuinely delivers on a lazy morning or an afternoon treat, and once you have the ratio memorised you will never need to look it up again. From here, dig into the instant coffee that makes it work, then keep experimenting with the foam-to-milk balance until it is exactly your cup.