Dalgona coffee is equal parts instant coffee, sugar and hot water, whipped until it forms stiff pale peaks, then spooned onto cold milk.
Why it requires instant
Spray-dried instant coffee contains compounds that foam and hold structure when whipped with sugar. Brewed coffee will not do this — it lacks the solids to build a stable foam.
This is the same reason a Greek frappé needs instant.
The proportions
Two tablespoons each of instant coffee, granulated sugar and hot water. The sugar is structural, not optional — it is what stabilizes the foam.
Whip for three to five minutes with an electric whisk, or considerably longer by hand.
Serving
Spoon onto a glass of cold milk, ice optional. Stir before drinking, or eat the foam.
The name and the moment
Named after dalgona, a Korean honeycomb toffee it resembles. It became a global phenomenon during the 2020 lockdowns, when people had time and only instant coffee.
The Indian relative
Phenti hui coffee — beaten coffee — is the same thing and predates it by decades. In India the whipped coffee and sugar are usually topped with hot milk rather than poured over cold.
Getting the foam to hold
Use granulated sugar and water just off the boil; cold water and powdered sweeteners give a looser foam. A hand mixer or a milk frother wand gets there in a few minutes, a hand whisk in ten or more. Stop at stiff peaks that hold their shape when the whisk is lifted. Low-sugar versions do whip, but collapse into the milk within minutes.
Serving and strength
For one tall glass, use about 200 to 250 ml (7 to 8.5 oz) of cold milk with ice, and spoon the foam on top. Whole milk or a barista oat milk suits it best. A batch made with two tablespoons of instant holds several cups’ worth of instant coffee, so it is strong; many people split one batch between two glasses.
Variations
The same method works with a teaspoon of cocoa whipped in, or with hot milk in winter. Matcha versions borrow the name but need egg white or cream to foam, because matcha does not whip like instant coffee. In India the whipped coffee and sugar are usually topped with hot milk rather than poured over cold.
Getting the foam to hold
Use granulated sugar and water just off the boil; cold water and powdered sweeteners give a looser foam. A hand mixer or a milk frother wand gets there in a few minutes, a hand whisk in ten or more. Stop at stiff peaks that hold their shape when the whisk is lifted. Low-sugar versions do whip, but collapse into the milk within minutes.
Serving and strength
For one tall glass, use about 200 to 250 ml (7 to 8.5 oz) of cold milk with ice, and spoon the foam on top. Whole milk or a barista oat milk suits it best. A batch made with two tablespoons of instant holds several cups’ worth of instant coffee, so it is strong; many people split one batch between two glasses.
Variations
The same method works with a teaspoon of cocoa whipped in, or with hot milk in winter. Matcha versions borrow the name but need egg white or cream to foam, because matcha does not whip like instant coffee.
