Mix the instant coffee and boiling water, stir it well.
Heat the milk in a glass container for 1 minute in a microwave. Froth the hot milk for 2 minutes with a handheld frother. You’re aiming for a foam layer that’s 2 fingers thick – 35mm, to be precise.
Pour the coffee into your mug of choice.
Pour the frothed milk into the coffee.
Sprinkle with cocoa, nutmeg, or cinnamon powder, and serve immediately.
Enjoy your coffee!