Add the instant coffee, sugar, and hot water to a mason jar.
Tightly secure the lid and shake vigorously for about 3 to 5 minutes until the mixture becomes thick and frothy.
Once whipped, spoon the coffee mixture over a glass of milk, either hot or cold, and stir gently before enjoying.

Variations & Tips
For a flavored twist, consider adding a dash of vanilla extract or a sprinkle of cinnamon to the coffee mixture before whipping. You can also experiment with different types of milk, such as almond or oat milk, for a dairy-free option. If you prefer a less sweet version, reduce the sugar to 1 tablespoon. For an extra indulgent treat, top your whipped coffee with a dusting of cocoa powder or a drizzle of caramel sauce.