Grab two glass/clear coffee mugs.
Add ice halfway up the mugs.
Pour in milk; milk should come about ¾ of the way up the glass. Set aside.
Add instant coffee, sugar, and boiling water to a large mixing bowl; you need a bigger mixing bowl so you have enough room to whisk.
Grab a whisk and vigorously whisk the mixture; it will start to turn a light caramel color; continue to whisk until it thickens; about 3 minutes. You’re looking for a mousse-like consistency with strong peaks. You can also use a handheld mixer or a frother.
Spoon coffee mixture over the milk; give it a minute and then gently mix it with a straw or spoon.
Calories: 176 kcal | Carbohydrates: 25 g | Protein: 6 g | Fat: 6 g | Saturated Fat: 3 g | Cholesterol: 18 mg | Sodium: 81 mg | Potassium: 418 mg | Sugar: 21 g | Vitamin A: 296 IU | Calcium: 214 mg | Iron: 1 mg | Net Carbs: 25 g
Nutritional info is an estimate and provided as courtesy. Values may vary according to the ingredients and tools used. Please use your preferred nutritional calculator for more detailed info.