Dalgona Coffee Frappuccino (Whipped Coffee)

Dalgona coffee is the one where you whip instant coffee, sugar and hot water into a thick caramel-coloured foam and spoon it over cold milk. It looks like something a coffee shop charges five pounds for and it is made from three things you almost certainly already own. Blend it with ice instead and you have the frappuccino version, which is what we are doing here.

It tastes strong and bittersweet with a proper toasted coffee edge, and the foam has the texture of soft whipped cream. It is easy but it requires either a few minutes of hand whisking or an electric whisk, and the whole thing takes ten minutes. This is our home version of the Dalgona from the Frappuccinos list at The Cozy Bowl.

Why This Recipe Works

• It has to be instant coffee. This is the one non-negotiable rule. Instant coffee is freeze-dried or spray-dried and contains the compounds that trap air and hold a foam. Ground coffee, espresso and coffee pods will not whip, no matter how long you beat them, because they simply do not have the structure.
• Equal parts coffee, sugar and hot water. Two tablespoons of each. The sugar provides the structure that stabilises the foam, and reducing it will give you a foam that collapses within minutes.
• The water must be hot. It dissolves the coffee granules and the sugar completely. Undissolved granules mean a gritty foam that will not hold air.
• Whipping to stiff peaks, not soft. You are looking for a foam that holds a peak when you lift the whisk and sits proudly on the milk rather than sinking into it. That takes three to five minutes with an electric whisk and considerably longer by hand.
• The foam goes on last, over ice-cold milk. Warm milk collapses the foam on contact. Properly cold milk supports it.
• The frappuccino base is blended separately. Blending the milk and ice first, then topping with the foam, means you get the slushy texture underneath and the mousse on top rather than one uniform beige drink.

Ingredient Notes

Instant coffee. Any standard instant coffee granules or powder. Cheaper instant coffee actually whips slightly better than premium freeze-dried, which is one of the few times in life that is true. Decaffeinated instant works exactly the same way.

Caster sugar. Dissolves faster than granulated. Granulated works but whisk a little longer to be sure it has gone. Do not reduce the quantity below two tablespoons or the foam will not hold.

Hot water. Just off the boil is fine. Two tablespoons only — this is a very small amount of liquid and adding more will stop it whipping.

Milk. Whole milk gives the richest result. Semi-skimmed is fine. Oat milk is the best plant-based option here because its slight sweetness and body work well with the bitter foam; almond milk is thinner and the drink separates faster.

Ice. Around 200 g, or about ten cubes. Use proper solid cubes rather than the half-melted ones at the bottom of the tray, which will water the drink down.

Optional. A tablespoon of vanilla syrup or caramel syrup in the blended base, or a pinch of cocoa powder dusted over the foam.

Substitutions and Variations

Iced dalgona (not blended). Fill a glass with ice, pour over cold milk, spoon the foam on top. This is the original and it looks better in a tall glass. Skip the blender entirely.

Hot dalgona. Warm milk with the foam spooned on top. It will collapse within a couple of minutes, so drink it promptly.

Caramel dalgona. Add a tablespoon of caramel syrup to the blended base and drizzle a little over the foam.

Chocolate dalgona. Whisk a teaspoon of cocoa powder into the coffee mixture before whipping. It gives a mocha character and the foam holds slightly firmer.

With boba. Add cooked tapioca pearls or popping boba to the bottom of the glass. The method for preparing boba is in our fruit bubble soda recipe.

Decaf or lower sugar in the base. Use decaffeinated instant coffee, which whips identically. You cannot reduce the sugar in the foam itself without losing the structure, but you can leave any syrup out of the milk base.

This recipe contains dairy as written. We have not tested plant-based versions thoroughly enough to describe them as suitable for a vegan diet, though the foam itself contains no animal products.

Step-by-Step Guidance

Full method in the card. Really there is only one step that matters.

Whipping the foam

Put two tablespoons each of instant coffee, caster sugar and hot water into a bowl that is much bigger than you think you need — the mixture roughly quadruples in volume. Whisk on a medium-high speed. For the first thirty seconds it will look like dark liquid and you will assume it is not working. Then it will lighten to a milky coffee colour, then thicken, then start holding ribbons from the whisk. It is ready when it is a pale toffee colour, roughly doubled or tripled, and holds a peak that only just droops at the tip. With an electric hand whisk this takes three to five minutes. By hand with a balloon whisk, expect eight to twelve minutes and a sore arm. A milk frother wand works but takes longer and gives a slightly looser foam.

Blending the base

Milk, ice and any syrup into a blender and blitz for about thirty seconds until slushy and smooth with no large ice fragments. Pour into a tall glass, leaving 3 cm of space at the top.

Topping and serving

Spoon the foam over the top and let it sit proud, then serve immediately with a spoon and a straw. Tell whoever is drinking it to stir it in as they go rather than all at once, so they get some foam in every mouthful.

Professional Tips

• Use a bigger bowl than seems necessary. The mixture increases three or four times in volume and a small bowl means coffee foam up your walls.
• Do not give up at ninety seconds. Everyone thinks it has failed at that point. Keep going; the transformation is quite sudden.
• Cold milk, always. Warm or even room-temperature milk deflates the foam on contact.
• Make the foam last. It holds its shape for a good while but it is best in the first ten minutes, and it will slowly separate if left.
• A tall narrow glass looks best. The layers are the whole appeal, and a wide glass loses the effect.
• Chill the glass. Two minutes in the freezer keeps the drink cold much longer.
• Make a double batch of foam. It keeps in the fridge for a few hours and re-whips in seconds if it loosens, so you can make two drinks without whipping twice.

Troubleshooting

Problem	Likely cause	Solution	Prevention
Mixture will not thicken at all	Ground coffee or espresso used instead of instant	Nothing will fix it; start again with instant coffee	Only instant coffee granules or powder will whip
Foam thin and loose	Not whipped long enough, or sugar reduced	Keep whisking for another 2 minutes	Whip to stiff peaks, and use the full 2 tbsp sugar
Foam collapses on the milk	Milk not cold enough, or foam under-whipped	Re-whisk the foam and use properly chilled milk	Ice-cold milk and a foam that holds a peak
Gritty texture	Sugar or coffee not fully dissolved	Whisk longer; it may smooth out	Use hot water and caster sugar, and whisk until glossy
Too much water added	Measured by eye	Add another tablespoon each of coffee and sugar	Equal parts, measured: 2 tbsp of each
Drink watery	Half-melted ice used, or over-blended	Add a couple more ice cubes and pulse briefly	Use solid ice cubes and blend for 30 seconds only
Far too bitter	Foam stirred in all at once	Add more milk	Stir gradually while drinking, or add syrup to the base
Foam separated after standing	Left too long	Whisk it briefly to bring it back	Make the foam last and serve within 10 minutes

Serving Suggestions

This is a strong, sweet drink and it goes best with something plain rather than another sweet thing. That said, it is very good with chocolate fudge cake if you want to lean in completely, and it works well as an afternoon pick-me-up alongside a plate of apple pie rolls.

If you are putting together a drinks list at home, the coconut cloud and a bubble shake cover the non-coffee end, and a karak chai is the hot alternative. More in bubble drinks.

Storage and Reheating

• The foam. Keeps in a covered bowl in the fridge for a few hours and up to a day. It will loosen and separate slightly; a quick whisk brings it straight back.
• The blended base. Does not keep. The ice melts and it separates into milk with a layer of water. Blend to order.
• Assembled drink. Drink within ten minutes. After that the foam sinks and the ice dilutes everything.
• Freezing. The foam can be piped into blobs on a lined tray and frozen, then dropped into cold milk as a coffee ice cube, which is a genuinely good trick.
• Making ahead for guests. Whip a large batch of foam an hour or two before, keep it covered in the fridge, and blend each base to order. That is the efficient way to serve several.

This drink contains a significant amount of caffeine and sugar, so it is not suitable for children. We have not carried out shelf-life testing on this recipe, so use your own judgement on storage.

Frequently Asked Questions

Why will my coffee not whip?

Almost certainly because you are using ground coffee, espresso or coffee from a pod. Only instant coffee whips, because the freeze-drying or spray-drying process leaves behind the structures that trap and hold air. There is no workaround.

Does the brand of instant coffee matter?

Not much, and inexpensive instant coffee often whips slightly better than premium freeze-dried. Decaffeinated instant works exactly the same.

Can I use less sugar?

Not in the foam. The sugar is providing the structure that holds the air, and reducing it gives you a foam that collapses. You can leave any additional syrup out of the milk base instead.

How long does it take to whip by hand?

Eight to twelve minutes with a balloon whisk, and it is hard work. An electric hand whisk does it in three to five. A milk frother wand works but takes longer and gives a looser foam.

Why is it called dalgona?

It is named after dalgona, a Korean honeycomb toffee that the whipped coffee resembles in colour and flavour. The drink became widely popular in 2020. The sweet itself is a different thing entirely, and we have a dalgona cookie recipe if you want to make that.

Can I make it without a blender?

Yes. Skip the blending and simply pour cold milk over a glass of ice, then spoon the foam on top. That is the original iced version and arguably the better-looking drink.

Is it very strong?

Yes. Two tablespoons of instant coffee is a substantial amount of caffeine, and this recipe makes two drinks. It is not suitable for children.

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Three Ingredients, One Very Good Drink

It is worth making once purely for the moment the mixture suddenly turns from dark liquid to pale toffee foam. If you would rather have someone else do the whisking, the Dalgona frappuccino is on the drinks menu whenever you visit The Cozy Bowl at 172 Biscot Road in Luton, or order online.