Combine the first five ingredients together in a medium-sized mixing bowl.
Beat them together for 3-5 minutes with a hand-held electric mixer on high speed, until the mixture forms a mousse that makes stiff peaks. You may alternatively use a whisk, and beat for 10-12 minutes.
Fill two mugs half-way with ice, and pour the milk over the ice. Top the milk with the mousse and garnish with the orange zest and nutmeg.
The delicious, rich taste of Van Houtte® Instant Coffee. Keep this recipe on hand and indulge your taste buds often!