In a mixing bowl, combine the instant coffee, sugar, and hot water.
Using a hand mixer or whisk, beat the mixture until it becomes light, fluffy, and forms stiff peaks (about 4-5 minutes)!
Transfer the whip to a glass container and freeze overnight. Keep the remaining whip to make regular dalgona coffee.
In a glass, add ice cubes. Pour in the milk, leaving some space at the top. Spoon the whipped coffee mixture on top of the milk.
Before drinking, mix the whipped coffee into the milk.
Scoop 1-2 scoops of frozen coffee into a glass with ice. Pour in the milk and give it a good mix to make frozen dalgona whipped coffee. Enjoy!